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Depressive status explains a significant amount of the variance in COPD assessment test (CAT) scores
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Depressive status explains a significant amount of the variance in COPD assessment test (CAT) scores
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Journal Article
Depressive status explains a significant amount of the variance in COPD assessment test (CAT) scores
2018
Overview
COPD assessment test (CAT) is a short, easy-to-complete health status tool that has been incorporated into the multidimensional assessment of COPD in order to guide therapy; therefore, it is important to understand the factors determining CAT scores.
This is a post hoc analysis of a cross-sectional, observational study conducted in respiratory medicine departments and primary care centers in Spain with the aim of identifying the factors determining CAT scores, focusing particularly on the cognitive status measured by the Mini-Mental State Examination (MMSE) and levels of depression measured by the short Beck Depression Inventory (BDI).
A total of 684 COPD patients were analyzed; 84.1% were men, the mean age of patients was 68.7 years, and the mean forced expiratory volume in 1 second (%) was 55.1%. Mean CAT score was 21.8. CAT scores correlated with the MMSE score (Pearson's coefficient
=-0.371) and the BDI (
=0.620), both
<0.001. In the multivariate analysis, the usual COPD severity variables (age, dyspnea, lung function, and comorbidity) together with MMSE and BDI scores were significantly associated with CAT scores and explained 45% of the variability. However, a model including only MMSE and BDI scores explained up to 40% and BDI alone explained 38% of the CAT variance.
CAT scores are associated with clinical variables of severity of COPD. However, cognitive status and, in particular, the level of depression explain a larger percentage of the variance in the CAT scores than the usual COPD clinical severity variables.
Publisher
Dove Medical Press Limited,Dove Medical Press Ltd,Dove Medical Press
Subject
/ Affect
/ Aged
/ Analysis
/ Beck Depression Inventory (BDI)
/ CAT
/ Chronic obstructive lung disease
/ Chronic obstructive pulmonary disease
/ COPD
/ Depression - physiopathology
/ Dyspnea
/ Female
/ Humans
/ Male
/ Mental Status and Dementia Tests
/ Mini-Mental State Examination (MMSE)
/ Pulmonary Disease, Chronic Obstructive - diagnosis
/ Pulmonary Disease, Chronic Obstructive - epidemiology
/ Pulmonary Disease, Chronic Obstructive - physiopathology
/ Pulmonary Disease, Chronic Obstructive - psychology
/ Values
