Thông tin tài liệu
i
INTENTION TO AVOID SMOKING OF VIETNAMESE ADOLECENT
In Partial Fulfillment of the Requirements of the Degree of
MASTER OF BUSINESS ADMINISTRATION
In Business
By
Ms.: Le Thi Thuy
ID: MBA 05044
International University - Vietnam National University HCMC
January 2014
ii
INTENTION TO AVOID SMOKING OF VIETNAMESE ADOLECENT
In Partial Fulfillment of the Requirements of the Degree of
MASTER OF BUSINESS ADMINISTRATION
In Business
By
Ms.: Le Thi Thuy
ID: MBA 05044
International University - Vietnam National University HCMC
January 2014
Under the guidance and approval of the committee, and approved by all its members, this
thesis has been accepted in partial fulfillment of the requirements for the degree.
Approved:
---------------------------------------------Chairperson
---------------------------------------------Committee member
---------------------------------------------Committee member
--------------------------------------------Committee member
--------------------------------------------Committee member
--------------------------------------------Committee member
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Acknowledgement
My dissertation would have not been completed without the enthusiastic support
and assistance from many people. This period of time should be the most difficult time in my
life because of many problems happening in my family. Fortunately I have received the
support and encouraging from many people to overcome the problem.
On the first line, from the bottom of my heart, I would like to express my grateful
thanks to my advisor – Dr. Nguyen Thi Quynh Mai for all her enthusiastic instruction,
consultancy and especially her inspiring and encouraging me during the time for my final
thesis. She has created the most suitable condition for me and given me the most useful
advice to contribute to my thesis as well as my private difficulties.
I would like to send my thanks to International University – National University as
a whole, especially the School of Business where have spent almost two years studying this
MBA program from which I have accumulated a lot of knowledge as well as many skills that
I had not ever possessed before. During this time, I have also received the useful
assistance and prompt feedback from teaching staff and officers as well. Moreover, I have
made friends with many others student not only in my class but also senior and junior intakes.
I would like to express my special thanks to my friends, especially Mr. Ngo Quang
Long, Ms. Tran Hoang Cam Tu who already spent their valuable time to help me finish my
survey soonest.
Finally, I would like to send my special thanks to my sweet family who have always
encouraged and facilitated me in further study. They have already been beside me and given
me the big motivation to successfully complete my MBA program in IU – VNU.
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Plagiarism Statements
I would like to declare that, apart from the acknowledged references, this thesis either
does not use language, ideas, or other original material from anyone; or has not been
previously submitted to any other educational and research programs or institutions. I fully
understand that any writings in this thesis contradicted to the above statement will
automatically lead to the rejection from the MBA program at the International University Vietnam National University Ho Chi Minh City.
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Copyright Statement
This copy of the thesis has been supplied on condition that anyone who consults it is
understood to recognize that its copyright rests with its author and that no quotation from the
thesis and no information derived from it may be published without the author’s prior
consent.
© Lê Thị Thủy / MBA05044 / 2012 -2014
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Table of content
Chapter 1 – Introduction .................................................................................................... 1
1.1
Background Of The Study ................................................................................................... 1
1.2
Smoking In Viet Nam ........................................................................................................... 2
1.3
Rationale of study ................................................................................................................. 3
1.4
Main Research Question And Hypothesis............................................................................ 5
1.4.1
Research question............................................................................................ 5
1.4.2
Research hypothesis......................................................................................... 5
1.5
Objectives Of The Study....................................................................................................... 5
1.6
Scope And Limitations ......................................................................................................... 5
1.7
Significance And Implications ............................................................................................. 6
Chapter 2 – Literature review ............................................................................................ 7
2.1
Concept Of Behavioral Intention......................................................................................... 7
2.2
The Predictive Theories And Theory Of Planned Behavior (TPB) .................................. 9
2.2.1
Overall View Of Theory Of Planned Behavior................................................ 9
2.2.2
The TPB And Smoking – A Review Of Previous Researches ........................ 10
2.2.3
Components Of Theory Of Planned Behavior .............................................. 12
2.2.3.1
Attitude (towards the behavior) ............................................................................... 12
2.2.3.2
Subjective Norms (about the behavior) .................................................................... 12
2.2.3.3
Perceived behavioral control (of the behavior) ....................................................... 13
2.2.3.4
Behavioral intention and behavior........................................................................... 14
2.2.4
Conceptual framework .................................................................................. 14
Chapter 3 – Research Methodologies ............................................................................... 16
3.1
Research Approach ............................................................................................................. 16
3.2
Research Process ................................................................................................................. 17
3.3
Data Collection Method ...................................................................................................... 19
3.3.1
Target Population ......................................................................................... 19
3.3.2
Sample Size ................................................................................................... 19
3.3.3
Sampling Method And Data Collection......................................................... 20
3.3.4
Research Instrument And Questionnaire Design.......................................... 21
3.3.5
Data Analysis. ............................................................................................... 23
Chapter 4 – Data Analysis And Research Results ........................................................... 25
4.1
Sample Demographics ........................................................................................................ 25
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4.2
Descriptive Statistics ........................................................................................................... 30
4.2.1
Attitude towards smoking .............................................................................. 30
4.2.2
Subjective Norms........................................................................................... 31
4.2.3
Perceived Behavioral Control ........................................................................ 32
4.2.4
Intention to avoid smoking ............................................................................ 32
4.2.5
Comparison among different demographics ................................................. 33
4.2.5.1
The difference between male and female’s attitude towards smoking ..................... 33
4.2.5.2
people
The difference between male and female’s evaluation towards effects from other
…………………………………………………………………………………….................35
4.2.5.3
The difference between male and female’s control towards smoking ...................... 35
4.2.5.4
The difference between male and female’s intention to avoid smoking ................... 36
4.3
Reliability statistics ............................................................................................................. 36
4.4
Validity Test.......................................................................................................................... 37
4.5
Model revision ..................................................................................................................... 39
4.6
Hypothesis Revision ............................................................................................................ 40
4.7
Pearson correlation test ...................................................................................................... 40
4.8
Regression analysis ............................................................................................................. 42
Chapter 5 – Conclusion And Recommendation ............................................................... 46
5.1
Summary And Discussion Of Research Findings ............................................................ 46
5.2
Recommendations ............................................................................................................... 48
5.3
Limitations and recommendations for further researches.............................................. 49
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List of Tables
Table 1: Constructs and indicators of behavior .................................................................... 22
Table 2: The profile of Respondents (N=330)...................................................................... 26
Table 3: Descriptive Statistics of Attitude towards smoking ................................................ 30
Table 4: Descriptive Statistics of Subjective Norms ............................................................ 31
Table 5: Descriptive Statistics of Perceived Behavioral Control .......................................... 32
Table 6: Descriptive Statistics of Intention to avoid smoking .............................................. 33
Table 7: The difference between male and female’s attitude towards smoking .................... 34
Table 8: The difference between male and female’s evaluation towards effects from other
people ................................................................................................................................. 35
Table 9: The difference between male and female’s control towards smoking ..................... 35
Table 10: The difference between male and female’s intention to avoid smoking ................ 36
Table 11: Reliability of variables......................................................................................... 37
Table 12: Rotated Component Matrix(a) ............................................................................. 38
Table 13: Reliability of variables after rotation .................................................................... 39
Table 14: Pearson correlation coefficient scale .................................................................... 41
Table 15: Correlation Coefficients of Variables................................................................... 41
Table 16: Regression for Intention to avoid smoking model ................................................ 42
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List of Figures
Figure 1: The increasing rate of global Cigarette Consumption in one century....................... 2
Figure 2: The Theory of Planned Behavior (Ajzen, 1991).................................................... 14
Figure 3: Conceptual Framework of factors influence to intention to avoid smoking ........... 15
Figure 4: Research Process .................................................................................................. 17
Figure 5: Percentages of Gender .......................................................................................... 27
Figure 6: Percentages of Income ......................................................................................... 28
Figure 7: Educational level .................................................................................................. 28
Figure 8: Smoking status ..................................................................................................... 29
Figure 9: Relationship between educational level and occupation ........................................ 29
Figure 10: Revised conceptual model .................................................................................. 40
Figure 11: Final research model .......................................................................................... 45
x
Abstract
The research of “Intention to avoid smoking of Vietnamese adolescent” was
conducted under circumstance that smoking situation has been becoming alarmingly,
especially in recent years in Viet Nam. It has a lot of bad effects for people’s health and the
question of decreasing smoking is one of the most social and difficult question currently.
However, the trend of consumption is changing day by day with the effects of actions from
organizations and people in society. In that general trend, the perception of young people on
smoking is also changing.
This study is conducted to test the ability of the theory of planned behavior (TPB) to
predict Vietnamese adolescent’s intention to avoid smoking and the subsequent behavior. A
prospective sample of 330 adolescents participated in the study. In the conceptual framework
model, it was hypothesis that there were three determinants to the effectiveness of behavioral
intention including attitude, subjective norms and perceived behavioral control. The target
population for this study was Vietnamese adolescent from 15 to 35 years old in Ho Chi Minh
City coming from three group of occupation including students, white-collar workers and bluecollar workers. Researcher applied quantitative approach as the major method to conduct the
study with main statistic technique consisting factor analysis and multiple regression.
Through the study, the difference among different demographics is also presented. Besides,
Intention to avoid smoking was directly influenced by perceived benefit towards smoking,
perceived harmfulness towards smoking, subjective norms and perceived behavioral control.
The finding from the study suggested that in order to reduce smoking in society, it is
necessary to have the effects of parents, teacher and need more propaganda campaigns about
the harmfulness of smoking.
Keywords: TPB, Attitude towards behavior, Subjective norms, Perceived behavior control,
Behavioral Intention.
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1
Chapter 1 – Introduction
The aim of this chapter is to briefly introduce the research background as well as the
basis of selecting the field of research. It is then followed with the discussion of the
research’s scope, limitations and its significance and implications. After all, the research
structure is also mentioned to make the research easier to follow.
1.1
Background Of The Study
Smoking has been considering as one of the most serious global problem for a long
time, especially in the current trend of increasing number of smoking people into the
adolescent. Smoking numbers have gone up with burning results in the last ten years.
According to the World Health Organization (WHO, 2013), globally the population covered
by at least one effective tobacco control measure has more than doubled from 1 billion to 2.3
billion. This comprises more than a third of the world’s population.
Smoking is one of the main risk factors for a number of chronic diseases, including
cancer, lung diseases, and cardiovascular diseases. However, smoking is still common
throughout the world. WHO also has given number that tobacco kills up to half of its users
and it kills nearly 6 million people each year. More than five million of those deaths are the
results of direct tobacco use while more than 600,000 are the result of non-smokers being
exposed to second-hand smoke. If the urgent action is not taken, the annual death toll could
rise to more than eight million by 2030.
Nearly 80% of the world's one billion smokers live in low- and middle-income
countries. Consumption of tobacco products is increasing globally, though it is decreasing in
some high-income and upper middle-income countries. A number of countries have
legislation restricting tobacco advertising, and regulating who can buy and use tobacco
2
products, and where people can smoke. However, the number of smoking people is still
increasing day by day and it has become the problem of society and takes a lot of engineer
from many organizations.
Figure 1: The increasing rate of global Cigarette Consumption in one century
(Source: http://tobaccoatlas.org/products/cigarette_consumption/fig_b/)
1.2
Smoking In Viet Nam
In Vietnam, smoking situation has been becoming alarmingly, especially in recent
years. Vietnam is among 15 leading countries of using tobacco. The rate of tobacco using
currently (estimating in population from 15 years old and over) is 23%, equal to 15.3 million
people. Among adults, the percentage of smokers was 47.4% in men and 1.4% in women.
The highest rate group of smoking rate is ranged in working age among 25 and 50 years old
and remarkably the age range of smoking is younger than that in the past because it is so easy
to access tobacco. Not only people who smoke directly suffer the disease but also the nonsmokers also are exposed to second-hand smoke. The number second-hand smoke is also
very high in Vietnam. The incidence of exposure to tobacco smoke at home is 67.6% and in
the workplace is 49.0%. In particular, the rate of exposure to tobacco smoke at home is nearly
3
70% in women and 50% in children. Passive cigarette smoke is one of the many factors
causing heart disease, lung cancer; it impairs respiratory function and affects generative
function in both men and women. It increases the risk of heart disease to 25-30%, lung
disease to 25% and increase the risk of stroke up to 82% (WHO, 2013).
The World Health Organization estimates that each year Vietnam has about 40,000
people die of diseases related to tobacco and if we do not have timely solution, this figure
will rise to 70,000 by 2030. This number is almost higher 4 times than the number of deaths
from road traffic accidents in our country each year. These studying data already has affected
to consumer’s trend and intention to avoid smoking day by day.
1.3
Rationale of study
The bad effects of smoking for people’s health and the social environment are very
clear and the information about this is communicated widely. According to the WHO Report
on the Global Tobacco Epidemic 2013, 2.3 billion is the number of people worldwide
covered by at least one life-saving measure to limit tobacco use has more than doubled in the
last five years. The number of people covered by bans on tobacco advertising, promotion and
sponsorship, the focus of this year’s report, increased by almost 400 million people residing
mainly in low- and middle-income countries (WHO, 2013). The ratio of Vietnamese
adolescent has also increased recent time and the effect has caused the government much
difficulty to solve problem.
Furthermore, the Report shows that 3 billion people are now covered by national antitobacco campaigns. As a result, hundreds of millions of nonsmokers are less likely to start.
However, the Report notes, to achieve the globally agreed target of a 30% reduction
of tobacco use by 2025, more countries have to implement comprehensive tobacco control
programs (WHO, 2013).
4
It is very clear that the trend of consumption is changing day by day if there are the
actions of organizations, people and when the perception of people is affected. In that general
trend, the perception of young people on smoking is also changing.
According to the research of North West Regional Youth Work Unit, young people
are affected by the issue of tobacco in the media and tobacco marketing through packaging. It
is of tremendous use to Tobacco Free Futures and frames young people’s views in a way that
is not influenced by prior knowledge of the evidence.
The findings are valuable in understanding what young people believe about these
issues. They also serve to demonstrate that young people have little conscious awareness of
the significant impact of branding and marketing on human behavior, which is well
established in the literature (North West Regional Youth Work Unit, 2012).
There are a lot of factors influencing perception of people including Social and
Environmental factors (accessibility of tobacco products, pricing, advertising and promotion,
parental hostility, interaction of social influences…), Personal Characteristics, Expectations
of Personal Effects of Smoking and Biological Factors (Centers for Disease Control and
Prevention (US); 2001 Mar.). About smoking behavior, in many past researches, the authors
have shown that smoking behavior related on social interaction (Panu Poutvaara & Lars-H.R
.Siemers, 2007); cigarette taxes (Mir M. Ali, 2012), education (Pierre Koning, Dinand
Webbink and Nicholas G. Martin, 2010).
According to Ajzen, the factors influence consumer’s behavioral intention including
Attitude, Subjective norm and Perceived behavioral control. This will lead to the behavior
(Ajzen, 1991).
Understanding the factors influencing the consumer’s behavior and perception will
help us to explore how young people think about smoking and investigate how conceptions of
addiction may influence intentions to smoke cigarettes. It also aims to give recommendations
5
for organizations, government offices and producers of smoking to apply for real life. This is
the goal that I need to archive in this research.
1.4
Main Research Question And Hypothesis
1.4.1
Research question
From the rationale of the research, these questions are raised: “What are factors influencing
Vietnamese adolescent’s intention to avoid smoking and what factor influences most to smoking?”
and “How do those factors impact on the intention to avoid smoking?” The ultimate question “How
do government officers use these factors to contribute to their campaigns of smoking invention and
how do producers use them to have right strategy on their business?”
1.4.2
Research hypothesis
The hypothesis research is conducted as below:
H1: Attitude towards smoking positively affect to the intention to avoid smoking
H2: Subjective norms positively affect to the intention to avoid smoking
H3: Perceived behavioral control positively affect to the intention to avoid smoking
1.5
Objectives Of The Study
This research is conducted to define the factors influence smoking behavioral
intention of Vietnamese adolescent age from 15 to 35 years old. Specifically, the research
will focus on three main objectives:
To evaluate the factors influence the intention to avoid smoking of Vietnamese
adolescent age from 15 to 35 years old and the factor most influences in smoking
behavioral intention;
To define how the factors impact on the intention to avoid smoking;
To give the recommendations for the families, young people, policy government
makers and tobacco producers.
1.6
Scope And Limitations
6
This research is conducted on people in Ho Chi Minh City within 15 to 35 years
including men and women from all occupations. The samples will include students, whitecollar workers and blue-collar workers. Research subjects cover people usually smoke every
day, people sometimes smoke and also people have never smoked until now.
The limitation of this research is that the samples are just people from 15 to 35 years
old living in Ho Chi Minh City, it is not large enough to generate an overall picture which
can be representative for all smoking people in Vietnam. Moreover, the perceptions of these
respondents are much diversified so the result of the research may be applied to just a certain
range of people only.
1.7
Significance And Implications
This research will contribute to understand reasons and factors lead people to the
intention to avoid smoking or not. Understanding the reasons and factors of smoking
intention will contribute to give recommendations for the families and young people to find
the right way to influence others in stopping smoking cigarette. More important significance
of this research is that it will help organizations and government offices to have more
suggestion as well as evidence to design and implement the method to reduce the smoking
rate in our society. In business, it will give recommendations for producers of cigarette to
find the best way to develop their business following the way of decreasing the bad effects to
social living. Last one is that this research will contribute to explain and development of the
theory.
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Chapter 2 – Literature review
The core function of this chapter is the revision of the previous researches in
association with this study’s problems. For the purpose of find the factors that influences to
smoking behavioral intention, the literature on Theory of Planned Behavior (TPB) was
reviewed. As the result, a comprehensive theoretical model of the characteristics of Theory of
Planned Behavior (TPB) success was tested to examine the relationship among the factors of
attitude, subjective norms and perceived behavioral control and smoking behavioral
intention.
2.1
Concept Of Behavioral Intention
Behavioral intention was first found by Fishbein and Ajzen’s in 1975 that were
described to “…capture the motivational factors that influence a behavior”. It is defined as an
action probability that someone will be able to do in a given behavior.
It can measure how much effort people are willing to attempt in order to implement
the behavior. In Theory of Planned Behavior, behavioral intention is the closest predictor of
behavior (Ajzen, 1991). “Behavioral intention is an indication of an individual's readiness to
perform a given behavior. It is assumed to be an immediate antecedent of behavior (Ajzen,
2002b)”. It is based on attitude toward the behavior, subjective norm, and perceived
behavioral control, with each predictor weighted for its importance in relation to the
behavior.
According to Armitage & Conner, 2001, behavioral intention is behavior-specific and
designed and structured by direct questions such as "I intend to do something" with Likert
scale response choices to measure the strength of intention. Intention is displayed in in
measurement by such as “I plan to do something”, “I will to to something”, “I expect to do
something” or other similar concepts.
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In many projects that the researches implemented to get the meaningful goal related in
better health for people, they already found that behavioral intention has high predictive
validity in relation to a real behavior (Committee on Communication for Behavior Change in
the 21st Century: Improving the Health of Diverse Populations, 2002). According to the
study of Armitage & Conner, 2001; Sheeran & Orbell, 1998; Sheppard, Jon, & Warshaw,
1988; Van den Putte, 1991, from 18% to 38% in behavior were illustrated by behavioral
intention.
Two main theories of behavioral intention that are most used include the Theory of
Reasoned Action (TRA) (Fishbein & Ajzen, 1975) and the Theory of Planned Behavior
(TPB) (Ajzen, 1991). In these models, the factor of behavior intention can be developed in
different ways such as how, when, how many, where or other specifics. For example “I plan
to smoke in next month/ 3 times per day/ in my house”. According to Gollwitzer &
Brandstätter, 1997; Milne, Orbell, & Sheeran, 2002, “The former has been classified a goal
intention and the latter an implementation intention”.
Besides above expressions of behavioral intention, the different terms are also used by
some other authors. The intention was used as a plan of behavior in response to specific
situations by Gollwitzer (1997). Example is a clause “If I run into my old drinking buddies,
I'll tell them I have to be somewhere and then call my AA sponsor”.
The main objective of the study of consumer behavior is to provide marketers the
knowledge and skills that are necessary to implement the analysis about customers to
enhance the understanding about markets and develop, open and improve the sales. However,
on this research, cigarette is a sensitive product in society with many opposite ideas that we
should stop or continue to produce, so the purposes also have some differences. Finding the
factors influencing the behavioral intention will help researchers to obtain some specific
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purposes that are not for marketing strategy of cigarette development but some other social
objectives.
2.2
The Predictive Theories And Theory Of Planned Behavior (TPB)
In 1969, Wicker's already had review of research on the attitude-behavior relationship
and he concluded that the given behavior was probably determined by attitudes. In recent
years, many studies “has been developing integrated models, including additional predictors
of behavior such as social norms or intentions” (Olson & Zanna, 1993). These studies
concentrate to the basic factors that decide the individual’s motivation to perform or not
perform the given behavior, so these models has been understood and applied such as the
motivational models (cf. Armitage & Conner, 2000). Among them, the most well-known
motivational models include the Health Belief Model (HBM; Janz & Becker, 1984),
Protection Motivation Theory (PMT; Rogers, 1983), Social Cognitive Theory (SCT; 1986),
the Theories of Reasoned Action (TRA; Ajzen & Fishbein, 1980; Fishbein & Ajzen, 1975),
and Planned Behaviour (TPB; Ajzen, 1985, 1988; 1991). The TPB is essentially an extension
of the TRA. TPB model is one of the most predictive persuasion theories and it was used in
many researches for a long time.
2.2.1 Overall View Of Theory Of Planned Behavior
The Theory of Planned Behavior (TPB) was introduced on the article “From
intentions to actions: A theory of planned behavior” by Icek Ajzen in 1985. This theory was
developed from Theory of Reasoned Action (TRA) that was suggested in 1975 by Martin
Fishbein together with Icek Ajzen. Ajzen and Fishbein had already built Theory of Reasoned
Action (TRA) after trying to estimate the difference between the attitude and behavior. The
TRA was related to voluntary behavior. However, the reality that many of behaviors were not
voluntary but were controlled and affected by outside factors lead the new addition with the
new component of perceived behavioral control. The new addition that was called Theory of
10
Planned Behavior (TPB) predicts the intended behavior because the behavior can be intended
and planned.
According to the theory of reasoned action, if people evaluate the suggested behavior
as positive (attitude), and if they think their significant others want them to perform the
behavior (subjective norm), this results in a higher intention (motivations) and they are more
likely to do so. A high correlation of attitudes and subjective norms to behavioral intention,
and subsequently to behavior, has been confirmed in many studies (Sheppard, B.H.;
Hartwick, J.& Warshaw, P.R. 1988).
2.2.2 The TPB And Smoking – A Review Of Previous Researches
The TPB model has been applied to several of studies of the relations among beliefs,
attitudes, behavioral intentions and behaviors in various fields such as advertising, public
relations, advertising campaigns and healthcare. Previous researches have shown that the
TPB is quite successful in predicting a large number of behaviors relating to the health. For
example, in the report of Armitage and Conner (2001) the analysis represented that “the
model accounted for 39% and 27% of the variance in intentions and behavior” in which the
attitude factor was the strongest predictor of intention (cf. Armitage & Conner, 2001).
Until now, it have been estimated about more than 1200 researches in academic
databases including Communication & Mass Media Complete, Academic Search Premier,
PsycARTICLES, Business Source Premier, PsycINFO, and PsycCRITIQUES. Especially,
some recent studies have found that the TPB would better help to predict health-related
behavioral intention than the TRA (Ajzen, 1988) (e.g., Albarracin, Fishbein, Johnson, &
Muellerieile, 2001; Sheeran & Taylor, 1999, leisure (e.g., Ajzen & Driver, 1992), exercise
(e.g., Nguyen, Potvin, & Otis, 1997), and diet (e.g., Conner, Kirk, Cade, & Barrett, 2003).
The TPB model has been also applied to environmental psychology area. In the
research in 2010, Koger and Winter already presented that the actions that are friendly with
11
environment would contain a positive normative belief. This shows that “sustainable
behaviors are widely promoted as positive behaviors”. However, the behavioral intentions do
not always lead to the behavior; it can be controlled by the belief or other attitude of
someone.
Therefore, the theory of planned behavior model is a very powerful and predictive
model for explaining the behavior of human. This explains the reason why this model has
been applied much in the studies of health and nutrition fields.
In a recent research, Teemu, Erno and Marco (2011) tested the Theory of Planned
Behavior in the context of entrepreneurship. The result from their test concluded that
“positive entrepreneurial intentions lead to startup behavior”. This finding supports for the
intention-behavior link.
The TPB has also been used to review the behavior in the context of smoking in the
researches of many authors such as Babrow, Black & Tiffany, 1990; Bennett & Clatworthy,
1999; Borland, Owen, Hill & Schofield, 1991; Conner et al., in press; DeVries, Backbier,
Kok & Dijkstra, 1995; Godin, Valois, Lepage, & Desharnais, 1992; Hanson, 1997; Hanson,
1999; Higgins & Conner, 2003; Hill, Boudreau & Amyot, 1999; Hill, Boudreau, Amyot,
Johnston et al., 2004; McMillan, Higgins & Conner, 2005; Norman et al., 1999; Rise, Kovac
& Kraft, 2005; Willemsen et al., 1996.
The model that was applied in this research had been conducted and developed from
some previous researches of tobacco using in many nations such as “Using the theory of
planned behavior to predict tobacco and alcohol use in South African students” (Steingold,
2008); “Smoking or not smoking: How well does the theory of planned behavior predict
intention and behavior?” (Inger Synnove Moan, 2005); “The Theory of Planned Behavior and
Smoking Cessation” (Paul Norman, Mark Conner, Russell Bell, 1999); “Theory of planned
behavior and smoking: meta-analysis and SEM model” (Topa and Moriano, 2010) and so on.
12
In this study, theory of planed behavior is applied to define the factors influence smoking
intention.
2.2.3 Components Of Theory Of Planned Behavior
2.2.3.1
Attitude (towards the behavior)
According to Ajzen, “attitude towards the behavior is an individual's positive or
negative evaluation of self-performance of the particular behavior”.
According to Fishbein & Ajzen, 1975, this component describes the level of favor or
disfavor estimation of someone toward the given behavior. It is decided by the total of factors
including the beliefs connecting the behavior to variety outcomes and other attributes.
The attitude of an individual “exists in the form of evaluation covering all types and
categories of evaluation, both overt and covert, or in cognitive, affective and conative forms”
(Eagly & Chaiken, 1993). Shook & Bratianu (2010) stated that each form would shape the
individual attitude based on beliefs of the individual in the possible outcomes. The more
pleasurable the possibility is, the higher the intention to implement the behavior will be, and
the less pleasurable the outcome possibility is, the lower the intention to carry out the
behavior will be. It means that someone will intent to do the certain behavior once they
evaluate this bring the advantages or it positively (Ajzen, I., & Fishbein, M., 1988).
2.2.3.2
Subjective Norms (about the behavior)
Subjective norm is an individual's perception about the particular behavior, which is
influenced by the judgment of significant others (e.g., parents, spouse, friends, teachers)
(Amjad, N. & Wood, A.M. 2009). According to Ajzen, subjective norms include the
estimations of individual under the pressure of society to carry out or not the given behavior.
This component is evaluated based on two interaction elements of “beliefs about how other
people, who may be in some way important to the person, would like them to behave
13
(normative beliefs), and the positive or negative judgments about each belief (outcome
evaluations)” (Francis et al., 2004).
There are some statements about the effect of Subjective norms to behavioral
intention. People who believe certain referents think they should perform a behavior and are
motivated to meet the expectations of referents will have a positive subjective norm. And,
vice versa those who believe the referents think they should not perform the behavior (smoke
in public) will have a negative subjective norm (Cowdery and Karshin, 2009). According to
Ajzen, I. and & Fishbein, M., (1988), an individual will intend to perform a certain behavior
when he/she perceives that important others think he/she should. Important others might be a
person’s, spouse, close friends, physician, etc.
2.2.3.3
Perceived behavioral control (of the behavior)
Perceived behavioral control is “an individual's perceived ease or difficulty of
performing the particular behavior” (Ajzen, 1991). It is determined by the summary of all
accessible control beliefs. In the other words, the degree of intention to perform a behavior of
interest depends on his or her control ability. This component also relates to control beliefs
which are the beliefs of someone about the existence of the factors causing the assistant or
prevention to the particular intention (Ajzen, 2001). The concept of perceived behavioral
control is also related to self-efficacy.
According to Ajzen, I. and & Fishbein, M., (1988), when individual think and believe
that they do not have any opportunities and foundation to perform an intention, they will not
likely to have a strong intention even in case that she or he keep the positive attitude toward
the behavior and other important people will approve that behavior. Although they have
enough positive attitudes and subjective norm, it still needs another factor of Perceived
behavioral control to lead the behavioral intention. The Perceived behavioral control can have
positive or negative, direct or indirect effect to behavior through behavioral intention. The
14
more controllability is, the weaker the intention to do the behavior will be and vice versa, the
less controllability is, the stronger the intention to do the behavior.
2.2.3.4
Behavioral intention and behavior
Behavioral intention is defined as the readiness of someone to perform a particular
behavior. Behavioral intention is considered as the immediate predecessor of behavior
(Ajzen, 2002b). It is determined by the attitude towards the behavior, subjective norm and
perceived behavioral control. Each component has different predictive influence for the
importance in relation to the given behavior.
Behavior is the response of an individual in a particular situation with respect to a
given purpose. Behavior is a range of many actions or styles carried out by individual,
organizations in a given environment including systems or organisms around as well as the
physical environment. Ajzen said that “A behavior is a function of compatible intentions and
perceptions of behavioral control in that perceived behavioral control is expected to moderate
the effect of intention on behavior, such that a favorable intention produces the behavior only
when perceived behavioral control is strong”.
2.2.4 Conceptual framework
The original model of Ajzen includes five components as below:
Figure 2: The Theory of Planned Behavior (Ajzen, 1991)
15
After examining of the models presented previously, together with other studies related to
determining factors for behavior of Sentosa and Mat, 2012; Ingram et al., 2000, the
components have been changed to be more suitable with the direction of research and the
theoretical framework applied in this study is displayed as following:
Figure 3: Conceptual Framework of factors influence to intention to avoid smoking
With conceptual framework, we have the research hypothesis as following:
H1: Attitude towards smoking positively affect to the intention to avoid smoking
H2: Subjective norms positively affect to the intention to avoid smoking
H3: Perceived behavioral control positively affect to the intention to avoid smoking
16
Chapter 3 – Research Methodologies
This chapter 3 provided the information about the overview of method to conduct the
study like research instrument to data collection. Besides, the data analysis techniques were
clearly described including descriptive statistics, factor analysis, multiple regression
and path analysis. Last but not least, it gives the full result of reliability test, validity test
and factor analysis for all the variables in the model.
3.1
Research Approach
In this study, researcher applied the mixed-method but the quantitative method is
focused and qualitative method just support for quantitative method. Qualitative researchers
aim to gather an in-depth understanding of smoking behavior and the reasons cause smoking
behavior. Basing on the detailed factors relating to smoking behavior from qualitative, the
researcher built the quantitative questions.
Several definitions for mixed methods have emerged over the years that incorporate
various elements of methods, research processes, philosophy, and research design.
An early definition of mixed methods came from writers in the field of evaluation.
Greene, Caracelli, and Graham (1989) emphasized the mixing of methods and the
disentanglement of methods and philosophy (i.e., paradigms).
Mixed method community which has “gone through a relatively rapid growth
spurt…it has acquired a formal methodology that did not exist before and is subscribed to by
an emerging community of practitioners and methodologists across the disciplines. In the
process of developing a distinct identity, as compared with other major research communities
of researchers in the social and human sciences, mixed methods have been adopted as the de
facto third alternative or “third methodological movement” (Tashakkori and Teddlie, 2010b)
17
Mixed methods is a “research in which the investigator collects, analyses, mixes, and
draws inferences from both quantitative and qualitative data in a single study or a program of
inquiry”. A more comprehensive definition is provided by Creswell and Plano Clark (in
2007) who define mixed methods as follows: Mixed methods research is a research design
with philosophical assumptions as well as methods of inquiry. As a methodology, it involves
philosophical assumptions that guide the direction of the collection and analysis of data and
the mixture of qualitative and quantitative data in a single study or series of studies. Its
central premise is that the use of quantitative and qualitative approaches in combination
provides a better understanding of research problems that either approach alone (Journal of
Mixed Methods, 2006).
In this study, researcher defined mixed-method designs as those that include at least
one quantitative method (designed to collect numbers) and one qualitative method (designed
to collect words), where neither type of method is inherently linked to any particular inquiry
paradigm.
3.2
Research Process
Research
Objectives
Research
Model
Open
Questionaire
Qualitative
Research
Quantitative
Research
Revised
Questionnaire
Pilot Study
Draft
Question
Data Analysis
Conclusion and
Recommendati
on
Figure 4: Research Process
18
In research process for this study, Qualitative research and Quantitative research are
two main steps.
Qualitative research is a method of inquiry employed in many different academic
disciplines, traditionally in the social sciences, but also in market research and further
contexts. Qualitative researchers aim to gather an in-depth understanding of human behavior
and the reasons that govern such behavior. The qualitative method investigates the why and
how of decision making, not just what, where, when. Hence, smaller but focused samples are
more often used than large samples (Denzin, Norman K. & Lincoln, Yvonna S. (Eds.), 2005).
For this study, qualitative research helped the author to find the reasons why people smoke or
not smoke, how often they smoke or when they smoke most. It also presented the factors
influence respondent’s habit of smoking or not smoking, the tendency of smoking in the
future and how can they avoid smoking or advising other to not smoke in future.
The results from qualitative research will be used to design the questionnaires in
quantitative research stage. In this research, researcher first designed some open questions
and conduct in depth interview with 8 people including 5 white-collar workers, 2 blue-collar
workers and 1 students. The rate of men and women is equal. Content of questionnaire is
general and opened for respondents have opportunity to show their opinion including:
-
What are the advantages of smoking in your opinion?
-
What are the disadvantages of smoking in your opinion?
-
What are the factors that affect you in smoking or not smoking?
-
Who influence you most in smoking or not smoking?
-
When do you want to smoke?
-
Why do you smoke /or not smoke?
-
How many cigarettes do you smoke every day?
-
How long have you smoked?
19
-
What can you do to decrease/ avoid smoking or help other people not to smoke in
future?
The next step is Quantitative research. Quantitative research refers to the systematic
empirical investigation of social phenomena via statistical, mathematical or computational
techniques. The objective of quantitative research is to develop and employ mathematical
models, theories and/or hypotheses pertaining to phenomena. The process of measurement is
central to quantitative research because it provides the fundamental connection between
empirical observation and mathematical expression of quantitative relationships. Quantitative
data is any data that is in numerical form such as statistics, percentages, etc. (Given, Lisa M.,
2008).
Based on interviewing, researcher will have depth understanding and chose the
suitable and necessary information that many people has same idea on that, combine to
literature review to design questionnaires. The factors that cover necessary information is
around four overall contents including the attitude of people towards smoking, subjective
norms, perceived behavioral control and intention towards smoking.
3.3
Data Collection Method
3.3.1 Target Population
Vietnamese adolescents age from 15 to 35 years including men and women. They
may be are currently smokers and not smokers. They are living in Ho Chi Minh City and
come from three groups of students, white-collar workers and blue-collar workers.
3.3.2 Sample Size
In term of determining sample size of the study, According to Comfrey and Lee
(1992), “the adequacy of sample size might be evaluated very roughly on the following
scale: 50 – very poor, 100 – poor, 200 – fair, 300 – good”. For this study, the sample size
of 360 is good to achieve representativeness and variety of answer partly.
20
Firstly, researcher proceeded to send survey with questions for 2 groups including 3
sub-groups. Researcher already sent 380 surveys and expected to collect 360 surveys.
However, the result collected was 330 qualified surveys as below:
Group 1: Men
Target
Collected
Student:
60 samples
65 samples
White-collar worker:
60 samples
65 samples
Blue-collar worker:
60 samples
65 samples
Group 2: Women
Student:
60 samples
60 samples
White-collar worker:
60 samples
60 samples
Blue-collar worker:
60 samples
15 samples
For sub groups of White-collar workers and Student, the number of men is fairly
similar (65 samples of men and 60 samples of women), but for Blue-collar worker, the
number of men is bigger than women in sample (65 samples of men with 15 samples of
women). In these studies, the women are used for purpose of comparison and contrast. For
Blue-collar worker group, the number of women collected was only 15 while the expected
and target number is 60 samples. This is a limitation of the research because most of woman
workers were shy of answering the survey and they transferred the survey to man colleges.
However, it did not affect a lot to the result.
The reason why researcher chose sample from three above groups is that they
represent for all different demographics. It will reflect fully about the perception of people to
smoking.
3.3.3 Sampling Method And Data Collection
21
As mentioned before, the main tool for this research is survey questionnaire so
approach a great quantity of respondent in short time is very important. Besides, limit to
human resource and budget also affects sampling selection. Therefore, convenient sampling,
(a non-probability sampling method) was used to select respondents. Although this method
do not create representativeness and generalization like random sampling (a
kind
of
probability sample) (Saunders & Thornhill, 2003), it could help the researcher obtain
information quickly and economically.
Primary data for this research was collected from the questionnaires. A wellorganized questionnaire was delivered to target population in three following ways. Firstly,
the questionnaires were sent through email. Secondly, researcher came to Nguyen Tat Thanh
University in District 4 and Phuong Nam College in Tan Phu District, Ho Chi Minh City and
directly delivered the questionnaire and kindly asked teachers and students for their
cooperation in providing the information. Thirdly, researcher came to Tan Binh Industrial
Zone in Ho Chi Minh City and handed the questionnaires to workers. This process had the
support from some friends who are the team leaders of workers in some companies. The
researcher explained objective and asked for complete questionnaire. This process took place
for 1 week from 5pm to 7pm every day which is rush hour at Tan Binh industrial zone.
3.3.4 Research Instrument And Questionnaire Design
The most effective tool was the questionnaire that was built based on major concepts
and variables used for this research. Firstly, the questionnaire design was started with
developing a sound theoretical framework. From the data collected from qualitative research,
basing on theoretical model, questionnaire was established. All suitable questions were
raised to ensure the reliability and validity of all scales of the research. The questions
are divided into two parts, part I includes 6 questions of nominal scale and ordinal scale and
part II includes 19 questions which were formulated on a seven-point Likert-scale ranging
22
from 1 to 7, equivalent to strongly disagree, disagree, fairly disagree, neutral, fairly agree,
agree and strongly agree respectively.
All items in Part II is presented in table below:
Table 1: Constructs and indicators of behavior
(Developed from Ajzen and Fishbein, 1980, Moan, 2005 and built from qualitative
research)
Factor
Attitude
Items
Encryption
I think that I can decrease the stress when smoking
ATT1
I think that I am perspicacious & cheery when smoking
ATT2
I think that smoking is costly
ATT3
I think that smoking will cause me the effects such as lung
ATT4
towards
cancer, throat cancer, brain hemorrhage
smoking
I think that smoking will influence my appearance such as
ATT5
yellow teeth, dark lips, wrinkles, odor
I think that smoking will cause the bad effect for the
ATT6
health of people around
My friends think that I should not to smoke
SN1
Parents/Guardian have not allowed me to smoke from the
SN2
time I was a child
Subjective My teachers have not allowed me to smoke in school from
SN3
Norms
the time I was a child
My darling/wife/husband does not agree for me to smoke
SN4
The social bad prejudices towards smoking action
SN5
influence me
23
Perceived
I can stop smoking anytime if I want
PBC1
I can stop smoking before bad health effect
PBC2
Behavioral I know exactly the harm in cigarette
Control
PBC3
I can definitely refuse the smoking invitation from other
PBC4
people
I do not intend to smoke next time
INT1
I intend to advice my friends, relatives to stop smoking
INT2
Intention
I intend to join some smoking prevention campaigns next
INT3
to avoid
time if I am appealed
smoking
I intend to use some additional supporting products if
INT4
currently I am smoking
3.3.5 Data Analysis.
All data collected from questionnaires will be analyzed with Statistical Package for Social
scientists (SPSS) software version 16.0 with aim to extract descriptive information of data,
Cronbach’s Alpha reliability result, factor analysis, Pearson correlation and multiple regression
outcomes.
According to Miller, 2000, reliability test was designed to administrate the internal
consistency or homogeneity of the variables among data set then level of correlation between
individual items could be indication of entire scale reliability.
Test validity is the extent to which a test accurately measures what it purports to measure.
In the fields of psychological testing and educational testing, “Validity refers to the degree to
which evidence and theory support the interpretations of test scores entailed by proposed uses of
tests” (American Educational Research Association, American Psychological Association, &
National Council on Measurement in Education, 1999). On a test with high validity, the items
are closely linked to the test’s intended focus. After testing the reliability of each variable,
24
researcher conducted data analysis. Factor analysis is a technique of data reduction. For example,
factor analysis can be used to identify the underlying components that explain the correlations
among a set of variables. By this way, it is possible to apply a smaller set of measures to explain a
substantial allocation of the total variance that is explained by all original variables. Factor analysis
makes researcher not only cover the valid variables into relevant group and delete the invalid
variables but also check the correlation or reliability of the variables in the same scale.
Pearson correlation test is applied to measure the degree to which there is a
linear regression between pair of metric variables. Basing on the result, it can be used to
explore the relationship between one continuous dependent variable and a number of
continuous independent variables or predictor.
25
Chapter 4 – Data Analysis And Research Results
This chapter aims to present data analysis techniques that were clearly described
including descriptive statistics, factor analysis, multiple regression and path analysis. It
also shows the statistical outcome resulted from analysis of collected data. Those outcomes
will be interpreted and discussed to establish foundation for recommendation as mentioned
objectives.
4.1
Sample Demographics
This research was conducted within Ho Chi Minh zone with aim to collect 360 well-
responded questionnaires from the adolescent. 380 surveys were distributed and the
researcher collected 340 ones. In 340 responses collected, 10 were stamped out because it
was not completed in all questions and researcher chose only 330 qualified surveys for SPSS
analysis.
In this research, sample demographics were examined by age, educational level,
occupation, marital status, income and current status of smoking. Following figures will
present those clearly.
Firstly, respondents’ profile is taken in to account. The figure shows that more than a
haft of respondents has never smoked (covering 65.8%). The age is divided into 3 groups
from 15 to 22, 23 to 28 and 29 to 35 years old and they come from three groups of occupation
including Student, White-collar workers and Blue-collar workers. In this sample, just 1.5% of
respondents are divorced and 1.2% is widowed. Nearly two third of them (72.1 %) is single
and the remaining is married. More than a haft of them (58.18%) has low income of fewer
than five millions Vietnam dong per month. This number reflects the reality of income of
blue-collar workers and student respondents in our society. One third (34.24%) of
respondents has medium in come from five to fifteen millions Vietnam dong and 7.58% of
26
them have high income more than fifteen millions Vietnam dong per month. About the
educational level, just 14.2% of respondents graduated from high school, most of them in
level of under graduate (college or university) (51.2%). The numbers on level of vocational
school and graduate (master or higher) are similar of about 17%.
Table 2: The profile of Respondents (N=330)
Demographics
Frequency
Valid Percent
Gender:
Male
195
59.1
Female
135
40.9
15 - 22
130
39.4
23 - 28
124
37.6
29 - 35
76
23.0
High School
47
14.2
Vocational school
58
17.6
169
51.2
56
17.0
White-collar workers
125
37.9
Student
125
37.9
80
24.2
238
72.1
83
25.2
Age:
Education level:
Under graduate
Graduate
Occupation:
Blue-collar workers
Marital status:
Single
Married
27
Divorced
5
1.5
Widowed
4
1.2
192
58.18
5 - 10 mil/month
84
25.45
Over 10 - 15 mil/month
29
8.79
Over 15 - 25 mil/month
17
5.15
8
2.42
Smoke everyday
42
12.7
Smoke occasionally
40
12.1
Have quitted smoking
31
9.4
217
65.8
Income:
Under 5 mil/ month
Over 25 mil/month
Current status of smoking:
Have never smoked
Male
Female
40.9%
Female
Male
51.9%
Figure 5: Percentages of Gender
28
58.18%
60.00%
40.00%
25.45%
20.00%
8.79%
5.15%
0.00%
From 0 to More
5 VND than 5 to
mil
10 VND
mil
More
than 10
to 15
VND mil
More
than 15
to 25
VND mil
2.43%
More
than 25
VND mil
Figure 6: Percentages of Income
High school
16.97%
Graduate
51.21%
Vocational
school
Undergraduate
Undergraduate
Graduate
17.58%
Vocational
school
14.24%
High school
0.00%
20.00%
40.00%
60.00%
Figure 7: Educational level
When checking about the current smoking status, 65.76% of respondents who have
never smoked and 24.85% among them smoke every day or occasionally. The range of age in
the research is from 15 to 35 years old. This data is suitable with the report of WHO in 2013
that the tobacco using rate in Viet Nam currently (estimating in population from 15 years old
and over) is 23%.
29
65.76%
70.00%
60.00%
50.00%
40.00%
30.00%
20.00%
10.00%
0.00%
12.73%
12.12%
9.39%
Figure 8: Smoking status
Seeing on Figure 10, we can see the relationship between the educational level and
occupation that is presented in the figure below suits with common sense, which is that the
higher level of education, the better job. The data shows that most of respondents who
currently work as blue-collar worker have educational level of high school (68.08%) while
most of respondents who currently work as white-collar worker have educational level of
graduated (80.36%).
High school
Bluecollar
workers
68.08%
19.0%
15.97%
17.85%
Vocational school
Undergraduate
27.66%
Student
53.5%
White- 4.26%
27.6% 36.69%
collar
workers
0%
1.79%
47.34%
Graduate
80.36%
50%
100%
Figure 9: Relationship between educational level and occupation
30
4.2
Descriptive Statistics
Descriptive statistics is employed in this study to figure out fundamental features of
data set such as means, standard deviation, frequency, dispersion and central tendency.
Basing on those, descriptions as well as explanations of the way three main factors
namely attitude, subjective norms, perceived behavioral control making impacts on intention
will be given.
All of the questions were formulated on a seven-point Likert-scale ranging from 1 to
7, equivalent to strongly disagree, disagree, fairly disagree, neutral, fairly agree, agree and
strongly agree respectively.
4.2.1
Attitude towards smoking
Attitude aims to measure to what extent the smoking action affects to the respondents in
term of positive or negative evaluation. An individual will hold a favorable attitude towards a
given behavior if he/she believes that the performance of the behavior will lead to mostly positive
outcomes (Ajzen and Fishbein, 1980).
Table 3: Descriptive Statistics of Attitude towards smoking
Variables
N
Minimum Maximum Mean
Std.
Deviation
Stress decrease
330
1.00
7.00
2.779
2.004
Perspicacious & cheery
330
1.00
7.00
2.530
1.902
Costly
330
1.00
7.00
5.697
1.930
Cancer
330
1.00
7.00
5.233
2.316
330
1.00
7.00
5.761
330
1.00
7.00
6.021
Bad effects for
appearance
Bad effect for other
people's health
Valid N (listwise)
1.934
1.809
330
31
There is a pretty great deal of concurrence in overall attitude provided by effects of the
smoking action. When showing the attitude towards the positive effects of smoking, means of
score respondents rated are quite low ranging from 2.53 of ATT 2 to 2.78 of ATT 1, which
means that respondents lowly appreciate the benefit of smoking. The neutral level is 4 but they
just evaluate at point of 2.530 and 2.779, it illustrates the recognisability of respondents on the
disadvantage of smoking. On the other hand, means of score they rated for negative effects of
smoking is quite high ranging from 5.23 of ATT 4 to 6.02 of ATT 6, it presents that respondents
have negative evaluation to smoking.
4.2.2
Subjective Norms
Subjective Norms was generated to estimate the respondents’ perception about the
smoking action, which is influenced by the judgment of significant others including friends,
parents/guardians, teachers, partners and social prejudice. Subjective norm is the perceived
social pressure to engage or not to engage in a behavior (Ajzen and Fishbein, 1980).
Table 4: Descriptive Statistics of Subjective Norms
Variables
N
Minimum Maximum Mean
Std.
Deviation
Friend
330
1.00
7.00
5.797
1.715
Parents/Guardian
330
1.00
7.00
6.073
1.651
Teacher
330
1.00
7.00
6.094
1.577
Partner
330
1.00
7.00
5.852
1.771
Social bad prejudice
330
1.00
7.00
5.009
1.976
Valid N (listwise)
330
The data is shown on above table presents that SN2 and SN3 have the near same average
score (6.073 and 6.094) which are the high score on evaluating the perception of respondents
about the smoking’s judgment of others people including parents/guardians and teachers in
school. Other remaining items including SN1, SN4 and SN5 also have high mean score from
5.009 to 5.852, it means that all the subjects mentioned in study by researcher have judgment
32
towards the respondents. In detail, they think that the respondents should not to smoke or they do
not want the respondents to smoke cigarette. These data also tell us that the society seems not to
support smoking action in general.
4.2.3
Perceived Behavioral Control
Perceived Behavioral Control refers to people's perceptions of their ability to perform a
given behavior. (Ajzen and Fishbein, 1980).
Table 5: Descriptive Statistics of Perceived Behavioral Control
Variables
N
Minimum Maximum Mean
Std.
Deviation
Stop anytime if I want
Stop before bad health
effect
Know exact harm
330
1.00
7.00
4.776
2.065
330
1.00
7.00
5.279
1.886
330
1.00
7.00
5.452
1.729
Refuse invitation
330
1.00
7.00
5.603
1.851
Valid N (listwise)
330
The table 5 enables the researcher to conclude that respondents fairly agree that they
have perception of their ability to stop smoking any time if they want (PBC1) through the
mean of 4.776. For other variables, the mean is from 5.279 to 5.604 (PBC2, PBC3, PBC4), it
illustrates that the belief of most respondents in their ability to control smoking is fairly
strong to strong.
4.2.4
Intention to avoid smoking
Intention is an indication of a person's readiness to perform a particular behavior, and it
is considered to be the immediate antecedent of behavior (Bagozzi, Baumgartner and Yi,
1998).
33
Table 6: Descriptive Statistics of Intention to avoid smoking
Variables
N
Minimum Maximum Mean
Std.
Deviation
Will not smoke next time
330
1.00
7.00
5.652
1.698
Advice other to not smoke
Smoking prevention
campaign
Addiction supporting
product
Valid N (listwise)
330
1.00
7.00
5.785
1.565
330
1.00
7.00
5.546
1.633
330
1.00
7.00
5.346
1.854
330
There is a similar high level in score from INT1 to INT4 which range from 5.346 to
5.785, hinting that the readiness of respondents to intend to have action to avoid smoking. Mean
value of INT1 is 5.652, proving that respondents tend to stop smoking or continue not to smoke.
Mean of INT2 is pretty high at 5.785, implying that they are ready to advice their friends or
relatives to stop smoking. Concerning INT3 and INT4, the scores are still higher than 5 (5.546
and 5.346) which show that respondents seem to be willing to join some smoking prevention
campaigns or they will use addiction supporting products if they are currently smoking.
In summary, from descriptive statistics, we can see the tendency of people about
smoking now. All responses present the Perceived harmfulness towards smoking and most of
them have tendency of smoking avoidance in the future. This brings to tobacco producers a
consideration about the changing the products to suit with social tend instead of cigarette.
4.2.5 Comparison among different demographics
4.2.5.1
The difference between male and female’s attitude towards smoking
34
Table 7: The difference between male and female’s attitude towards smoking
Variable
Female
Male
(Mean)
(Mean)
(Mean)
No.
Sig.
Conclusion
1
Stress decrease
1.88
3.40
.000
Female < Male
2
Perspicacious & cheery
1.70
3.11
.000
Female < Male
3
Costly
5.96
5.51
.034
Female > Male
4
Cancer
5.26
5.22
.869
5
Bad effects for appearance
6.01
5.58
.043
Female > Male
6.33
5.81
.007
Female > Male
Bad effect for other people's
6
health
Table 7 above is for the purpose of comparison mean between the attitude of male and
female in smoking behavior. Seeing on that, in total of 6 variables, there are 5 items that have
significant except variable “Cancer”. It means that male and female has different perception
towards the benefit of smoking as well as harmfulness of smoking. In detail, male think that
smoking brings the benefit including stress decrease and perspicacious & cheery feeling much
more than female. The reason why there is difference here is that very little women smoke and
they just know about the bad effects of smoking without real experience why the men is opposite.
They smoke and get some advantages of smoking. With three variables including Costly, Bad
effects for appearance and Bad effect for other people's health, the mean of female group is
higher than that of male group, and it shows that the perceived recognize about the
harmfulness of smoking in female is much more than in male group. About the bad effect that
smoking causes cancer, there is no significant, both male and female have the similar
evaluation.
35
4.2.5.2
The difference between male and female’s evaluation towards effects
from other people
Table 8: The difference between male and female’s evaluation towards effects from
other people
1
Friend
6.06
5.62
.021
2
Parents/Guardian
6.21
5.97
.194
3
Teacher
6.24
5.99
.149
4
Partner
6.04
5.72
.113
5
Social prejudice
5.22
4.86
.103
Female > Male
The result in table 8 shows that the factor “friends think that respondent should not to
smoke” has significant difference between male and female group. For female group, the
influence of friend towards the think that they should not to smoke is much more than in male
group. Four other factors do not have significant.
4.2.5.3
The difference between male and female’s control towards smoking
Table 9: The difference between male and female’s control towards smoking
1
Stop anytime if I want
4.43
5.02
.014
2
Stop before bad health effect
5.30
5.27
.891
3
Know exact harm
5.44
5.46
.902
4
Refuse invitation
5.64
5.58
.782
Female < Male
Women group do not think that they can stop smoking any time they want if currently they
are smoking as much as men group think. It was illustrated through the significant in variable “stop
anytime if I want”. For women, if people already smoked, it is not easy to get rid of smoking. For
other factors, there are not much difference between the control ability in woman and man.
36
4.2.5.4
The difference between male and female’s intention to avoid smoking
Table 10: The difference between male and female’s intention to avoid smoking
1 Will not smoke next time
5.93
5.46
.014
Female > Male
2 Advice relationship
6.00
5.64
.038
Female > Male
3 Smoking prevention campaign
5.99
5.24
.000
Female > Male
4 Addiction supporting product
5.64
5.14
.013
Female > Male
For Intention to avoid smoking, all variables have significant with the mean from women
group is bigger than in men group. These indicators show that the intention to avoid smoking and
advising other to not smoke as well as being willing to join the smoking prevention campaign of
female group is much more than that in male group. This is also suitable with the reality status of
smoking between two genders.
4.3
Reliability statistics
In the social sciences, acceptable reliability should be between 0.7 and 0.8 (Nunnally &
Bernstein, 1994) and total correlation must be greater than 0.3. Besides, there are also different
reports about the acceptable values of alpha ranging from 0.7 to 0.95. “The higher Cronbach’s
alpha, the greater reliability” (Nunally & Burnstein, 1994), however, if the alpha is too high it
may suggest that some items are redundant as they are testing the same question but in a different
guise (Mohsen Tavakol, Reg Dennick 2011). With that requirement, the Cronbach’s Alpha of the
research including attitude, subjective norms, perceived behavioral control and intention which is
0.765, 0.787, 0.764, 0.814 respectively is qualified. In addition, none of items’ total
correlation is lower than 0.3, so all item will be kept.
37
Table 11: Reliability of variables
4.4
Variable
N
No of item
Cronbach’s alpha
ATT
330
6
.765
SN
330
5
.787
PBC
330
4
.764
INT
330
4
.814
Validity Test
According to Gerbing & Anderson (1988), low factor loading ([...]... smoking positively affect to the intention to avoid smoking H2: Subjective norms positively affect to the intention to avoid smoking H3: Perceived behavioral control positively affect to the intention to avoid smoking 1.5 Objectives Of The Study This research is conducted to define the factors influence smoking behavioral intention of Vietnamese adolescent age from 15 to 35 years old Specifically, the... focus on three main objectives: To evaluate the factors influence the intention to avoid smoking of Vietnamese adolescent age from 15 to 35 years old and the factor most influences in smoking behavioral intention; To define how the factors impact on the intention to avoid smoking; To give the recommendations for the families, young people, policy government makers and tobacco producers 1.6 Scope And... H1: Attitude towards smoking positively affect to the intention to avoid smoking H2: Subjective norms positively affect to the intention to avoid smoking H3: Perceived behavioral control positively affect to the intention to avoid smoking 16 Chapter 3 – Research Methodologies This chapter 3 provided the information about the overview of method to conduct the study like research instrument to data collection... most to smoking? ” and “How do those factors impact on the intention to avoid smoking? ” The ultimate question “How do government officers use these factors to contribute to their campaigns of smoking invention and how do producers use them to have right strategy on their business?” 1.4.2 Research hypothesis The hypothesis research is conducted as below: H1: Attitude towards smoking positively affect to. .. examining of the models presented previously, together with other studies related to determining factors for behavior of Sentosa and Mat, 2012; Ingram et al., 2000, the components have been changed to be more suitable with the direction of research and the theoretical framework applied in this study is displayed as following: Figure 3: Conceptual Framework of factors influence to intention to avoid smoking. .. the reasons and factors of smoking intention will contribute to give recommendations for the families and young people to find the right way to influence others in stopping smoking cigarette More important significance of this research is that it will help organizations and government offices to have more suggestion as well as evidence to design and implement the method to reduce the smoking rate in our... “Theory of planned behavior and smoking: meta-analysis and SEM model” (Topa and Moriano, 2010) and so on 12 In this study, theory of planed behavior is applied to define the factors influence smoking intention 2.2.3 Components Of Theory Of Planned Behavior 2.2.3.1 Attitude (towards the behavior) According to Ajzen, “attitude towards the behavior is an individual's positive or negative evaluation of self-performance... aims to give recommendations 5 for organizations, government offices and producers of smoking to apply for real life This is the goal that I need to archive in this research 1.4 Main Research Question And Hypothesis 1.4.1 Research question From the rationale of the research, these questions are raised: “What are factors influencing Vietnamese adolescent’s intention to avoid smoking and what factor influences... influences to smoking behavioral intention, the literature on Theory of Planned Behavior (TPB) was reviewed As the result, a comprehensive theoretical model of the characteristics of Theory of Planned Behavior (TPB) success was tested to examine the relationship among the factors of attitude, subjective norms and perceived behavioral control and smoking behavioral intention 2.1 Concept Of Behavioral Intention. .. large enough to generate an overall picture which can be representative for all smoking people in Vietnam Moreover, the perceptions of these respondents are much diversified so the result of the research may be applied to just a certain range of people only 1.7 Significance And Implications This research will contribute to understand reasons and factors lead people to the intention to avoid smoking or ... affects to the intention to avoid smoking H2: Perceived harmfulness towards smoking positively affects to the intention to avoid smoking H3: Subjective norms positively affect to the intention to avoid. .. objectives: To evaluate the factors influence the intention to avoid smoking of Vietnamese adolescent age from 15 to 35 years old and the factor most influences in smoking behavioral intention; To define... affect to the intention to avoid smoking 1.5 Objectives Of The Study This research is conducted to define the factors influence smoking behavioral intention of Vietnamese adolescent age from 15 to
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