strengths and weaknesses of nested case control study
The Diesel Exhaust in Miners Study: A Nested Case–Control Study of Lung Cancer and Diesel Exhaust pptx
Ngày tải lên :
22/03/2014, 17:20
... exposures.
Study design
A nested case control study of lung cancer and DE in a cohort of
12 315 workers in eight non-metal mining facilities included 198
lung cancer deaths and 562 control subjects. ... quantitative estimates of average
intensity and cumulative REC exposure for subjects in both this
and the cohort study (12).
A small percentage of subjects in the nested case control study
worked at ... truncated at the date of death of the
matched case subject. We identified 650 eligible control subjects
and interviewed 611 (94.0%) of them or their next of kin (if the
control subject was deceased...
- 14
- 328
- 0
Báo cáo y học: "Proton-pump inhibitors are associated with a reduced risk for bleeding and perforated gastroduodenal ulcers attributable to non-steroidal anti-inflammatory drugs: a nested case-control study" pptx
Ngày tải lên :
09/08/2014, 10:20
... large nested case- control study.
Materials and methods
This nested case- control study was performed within the gov-
ernment-initiated healthcare region of the city of Enschede in
The Netherlands. ... many cases were
missed. However, one weakness of this study is that underes-
timation of the number of events might still have occurred.
Another weakness of this study, as in any case- control study,
is ... the article. HEV
and RWF also contributed to the selection and inclusion of
cases and controls. JvdP also contributed to the statistical
analysis of the data. All authors read and approved the...
- 8
- 459
- 0
Conclusions on Strengths and Weaknesses of Rang Dong Plastic Company
Ngày tải lên :
13/04/2013, 10:33
... the
organization’s strengths and weaknesses; (4) the selection of strategies that build on the
organization’s strengths and correct its weaknesses in order to take advantage of external
opportunities and counter ... an evaluation of current performance and
ending with the review and possible revision of mission and objectives.
The second is the process of generation, evaluation, and selection of the best alternative
strategy.
In ... Chandler
defined strategy as “the determination of the basic long-term goals and objectives of an
enterprise, and the adoption of courses of action and the allocation of resources necessary for
carrying...
- 66
- 784
- 3
Associated factors for treatment delay in pulmonary tuberculosis in HIV-infected individuals: a nested case-control study docx
Ngày tải lên :
06/03/2014, 04:20
... period of study. Of
these, 274 had the pulmonary form of the disease and
constituted the study population. Of these, 32 were
excluded according to the algorithm of Figure 1. Two
hundred and forty-two ... the treatment of HIV,
and to identify the factors associated with this delay.
Methods
Study design and population
A nested case- control study was undertaken within a
cohort of HIV-infected individuals ... infections and use of ART poten-
tially modify the course and the clinical and radiological
features of pulmonary TB [10], and could be associated
with diagnostic and treatment delay of TB. However,...
- 11
- 479
- 0
Báo cáo khoa học: "Breast cancer risk factors in Turkish women – a University Hospital based nested case control study" pps
Ngày tải lên :
09/08/2014, 04:21
... Hyperinsulinemia and
increased risk of breast cancer: findings from the British
women's hearth and health study. Cancer Causes and Control
2004, 15:267-275.
51. Pike MC, Krailo MD, Henderson BE, Casagrande ... smoking and breast
cancer risk. However, duration or intensity of smoking was
not investigated in the current report that might be one of
the weaknesses of this study. On the other hand, this ... contributions
VO carried out study conception and design, drafting of
the manuscript. BO helped to draft the manuscript and
acquisition of data, analysis and interpretation of data,
she has been involved...
- 8
- 307
- 0
Báo cáo y học: "Prescription channeling of COX-2 inhibitors and traditional nonselective nonsteroidal anti-inflammatory drugs: a population-based case–control study" pot
Ngày tải lên :
09/08/2014, 06:22
... in excess of standard recommendations (31.2%
of celecoxib and 8.8% of rofecoxib prescriptions). There
was a strong correlation between dosage and age. For all
products, the proportion of low dosages ... formulary of reimbursed medications.
A population-based case control study was conducted in
which the prevalence of risk factors and the medical histories of
patients prescribed COX-2 inhibitors and ... compared. The study population
consisted of a random sample of members of the Quebec drug
plan (age 18 years or older) who received at least one
dispensation of celecoxib (n = 42,422; cases), rofecoxib...
- 10
- 388
- 0
Báo cáo y học: "Association of functional variants of PTPN22 and tp53 in psoriatic arthritis: a case-control study" docx
Ngày tải lên :
09/08/2014, 07:20
... All
PsA probands were Caucasians. Information was collected
systematically and included age at onset of psoriasis and PsA,
and disease pattern. The control individuals (controls) were of
similar ... total of 238 Newfoundland PsA patients and 149 healthy
Newfoundland control individuals were studied. With respect
to the Newfoundland PsA patients, 53% were male and their
mean age at onset of ... participated in study
design, and drafted the initial manuscript. LP assisted in gen-
otyping some of the control individuals. SH aided in recruit-
ment and clinical phenotyping of PsA patients. PR and DG
conceived...
- 3
- 324
- 0
Báo cáo y học: " A 1-year case-control study in patients with rheumatoid arthritis indicates prevention of loss of bone mineral density in both responders and nonresponders to infliximab" docx
Ngày tải lên :
09/08/2014, 10:20
... historical control study, with controls
being active RA patients followed before the advent of TNF-α
blocker therapy and who were treated with methotrexate
alone. Such a historical control group is of ... effect of cofactors (continu-
ous variables and discrete variables) on that of infliximab. All
analyses were performed with SPSS (SPSS Institute, Cary,
NC, USA) software.
Results
Control and infliximab ... biological and BMD characteristics of
the 189 RA patients enrolled in the study are summarized in
Table 1. Patients exhibited typical clinical and biological fea-
tures of RA. The study included...
- 7
- 498
- 0
Báo cáo y học: "Diurnal secretion of growth hormone, cortisol, and dehydroepiandrosterone in pre- and perimenopausal women with active rheumatoid arthritis: a pilot case-control study" ppt
Ngày tải lên :
09/08/2014, 10:20
... The study was approved
by the Institutional Review Board of the National Institute of
Diabetes and Digestive and Kidney Diseases and the National
Institute of Arthritis and Musculoskeletal and ... ng/ml, with intra- and inter-assay CVs
of 6% and 12%, and those for the IGFBP-3 assay were 0.8
mg/l, with intra- and inter-assay CVs of 13% and 17%, respec-
tively. Serum levels of DHEA were measured ... independent of the use
of exogenous glucocorticoids. Most reports indicate that cir-
culating levels of cortisol and dehydroepiandrosterone
(DHEA) are normal, and not elevated, in the setting of
increased...
- 9
- 277
- 0
Báo cáo y học: "Association of MICA with rheumatoid arthritis independent of known HLA-DRB1 risk alleles in a family-based and a case control study" pps
Ngày tải lên :
09/08/2014, 14:20
... genomewide study. N Engl J Med 2007, 357:1199-1209.
32. Wellcome Trust Case Control Consortium: Genome-wide asso-
ciation study of 14,000 cases of seven common diseases and
3,000 shared controls. ... helped to perform analysis and
interpretation of the data. DHa and PA helped to perform anal-
ysis and interpretation of the data and to draft the manuscript.
VHT and UW (and the European Consortium ... all case- control indi-
viduals, accounting for HLA-DRB1 risk alleles. HLA-DRB1
classification according to du Montcel and colleagues [7] as
described above was applied. Cases of the case- control
cohort...
- 11
- 460
- 0
báo cáo khoa học: " RNAi-mediated knockdown of cyclooxygenase2 inhibits the growth, invasion and migration of SaOS2 human osteosarcoma cells: a case control study" ppt
Ngày tải lên :
10/08/2014, 10:21
... mechanism of LV-COX-2siRNA-
1-mediated downregulation of invasion and migration, the
expression of genes associated with angiogenesis were
examined. The mRNA levels of vegf, egf and bfgf of SaOS2
cells ... LV -control and parental SaOS2 cells.
b
P < 0.001 compared
with the LV -control and parental SaOS2 cells.
Figure 4 Measurement of invasion and migration of SaOS2 cells. (A) Invading and migrating ... osteosarcoma.
Cyclooxygenasesarekeyenzymesintheconversion
of arachidonic acid into prostaglandin (PG) and other
eicosanoids including PGD2, PGE2, PGF2, PGI2 and
thromboxane A2 [6]. There are two isoforms of
cyclooxygenase, designated COX-1 and COX-2....
- 9
- 373
- 0
Báo cáo y học: " Histology of adipose tissue inflammation in Dercum’s disease, obesity and normal weight controls: a case control study" doc
Ngày tải lên :
11/08/2014, 03:20
... design
of the study, carried out the histological judgement and contributed to the
writing of the manuscript. HB initiated and designed the study, took all
biopsies and contributed to the writing of ... 8:24
http://www.journal-inflammation.com/content/8/1/24
Page 6 of 6
RESEARCH Open Access
Histology of adipose tissue inflammation in
Dercum’s disease, obesity and normal weight
controls: a case control study
Emma Hansson
1*
, Henry ... a larger series of patients, and compare them with
healthy, obese, body mass index (BMI)-matched controls
and controls with normal BMI.
Patients and Methods
Patients
A total of 53 women with...
- 6
- 403
- 0
