... AccessHealth status in COPD cannot be measured by the St George’s Respiratory Questionnaire alone: an evaluation of the underlying concepts of this questionnaire Leonie Daudey1,2*, Jeannette B ... for definitions of the sub-domains and corresponding instruments.Statistical Analyses The relationships between the sections of the SGRQ and the sub-domains of the NIAF, as well as the intercorrela-tions ... 3 of 7definition of health status, by defining health status as ‘astate of complete physical, mental and social well-being,and not merely the absence of disease o r infirmity’ .Similarly,...