Development and first validation of the COPD Assessment Test
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TLDR
The aim of the present study was to develop a short validated patient-completed questionnaire, the COPD Assessment Test (CAT), assessing the impact of COPD on health status, which has good measurement properties, is sensitive to differences in state and should provide a valid, reliable and standardised measure of COPd health status with worldwide relevance.Abstract:
There is need for a validated short, simple instrument to quantify chronic obstructive pulmonary disease (COPD) impact in routine practice to aid health status assessment and communication between patient and physician. Current health-related quality of life questionnaires provide valid assessment of COPD, but are complex, which limits routine use. The aim of the present study was to develop a short validated patient-completed questionnaire, the COPD Assessment Test (CAT), assessing the impact of COPD on health status. 21 candidate items identified through qualitative research with COPD patients were used in three prospective international studies (Europe and the USA, n51,503). Psychometric and Rasch analyses identified eight items fitting a unidimensional model to form the CAT. Items were tested for differential functioning between countries. Internal consistency was excellent: Cronbach's a50.88. Test re-test in stable patients (n553) was very good (intra-class correlation coefficient 0.8). In the sample from the USA, the correlation with the COPD-specific version of the St George's Respiratory Questionnaire was r50.80. The difference between stable (n5229) and exacerbation patients (n567) was five units of the 40-point scale (12%; p,0.0001). The CAT is a short, simple questionnaire for assessing and monitoring COPD. It has good measurement properties, is sensitive to differences in state and should provide a valid, reliable and standardised measure of COPD health status with worldwide relevance.read more
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References
More filters
Journal ArticleDOI
Coefficient alpha and the internal structure of tests.
TL;DR: In this paper, a general formula (α) of which a special case is the Kuder-Richardson coefficient of equivalence is shown to be the mean of all split-half coefficients resulting from different splittings of a test, therefore an estimate of the correlation between two random samples of items from a universe of items like those in the test.
Book
Chronic obstructive pulmonary disease
TL;DR: The most important bacterial causes of exacerbations of COPD are nontypeable Haemophilus influenzae, Moraxella catarrhalis, Streptococcus pneumoniae and Chlamydia pneumoniae.
Journal ArticleDOI
The St George's Respiratory Questionnaire.
TL;DR: The St George's Respiratory Questionnaire is a standardized self-completed questionnaire for measuring impaired health and perceived well-being in airways disease and the background and rationale for its development are discussed together with an analysis of its performance.
Journal Article
Chronic obstructive pulmonary disease surveillance--United States, 1971-2000.
TL;DR: In this article, the authors present national data regarding objectively determined COPD (1971-1994), COPD-associated activity and functional limitations (1980-1996), self-reported COPD prevalence, COPD physician office and hospital outpatient department visits, and COPD hospitalizations, and deaths.
Journal Article
Chronic obstructive pulmonary disease surveillance--United States, 1971-2000.
TL;DR: The proportion of the population aged < 55 years with mild or moderate COPD, on the basis of pulmonary function testing, decreased from 1971-1975 to 1988-1994, possibly indicating that the upward trends in COPD hospitalizations and mortality might not continue.
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