Abstract
Patients’’ self-reports of dyspnea are an important clinical outcome in evaluating treatments in chronic obstructive pulmonary disease (COPD). This study evaluated the dimensions underlying self-reported dyspnea ratings, lung function, and respiratory muscle pressures in 143 patients with COPD. The validity of dyspnea ratings and lung function parameters to predict the variance of a common functional measure, the six-minute walk test, was also assessed. Results of a factor analysis confirmed previous work demonstrating the independence of dyspnea ratings from pulmonary function parameters. Dyspnea ratings also explained a greater proportion of the variance in the six-minute walk test than did lung function. Results of this study provide further evidence for the importance and independence of self-reported dyspnea ratings in evaluating outcomes in COPD.
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Preparation of this manuscript was supported in part by grants 2RT0268 from the University of California Tobacco Related Disease Research Program, HL 34732 from the National Heart, Lung, and Blood Institute, and by NHLBI Preventive Pulmonary Academic Award HL02215.
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Eakin, E.G., Kaplan, R.M., Ries, A.L. et al. Patients’ self-reports of dyspnea: An important and independent outcome in chronic obstructive pulmonary disease. Ann Behav Med 18, 87–90 (1996). https://doi.org/10.1007/BF02909580
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DOI: https://doi.org/10.1007/BF02909580