JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
VALIDATION STUDIES
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Assessing education in pulmonary rehabilitation: the Understanding COPD (UCOPD) questionnaire.

COPD 2012 April
There is currently no questionnaire available that comprehensively assesses patients' understanding, self-efficacy and satisfaction with the education component of pulmonary rehabilitation. The aim of this study was to develop the Understanding COPD (UCOPD) questionnaire. The key stages in the development of the UCOPD questionnaire were: (i) Generation of questions, and assessment of face and content validity, user-centredness, acceptability and feasibility; (ii) Assessment of plain English and readability; (iii) Assessment of structural validity; (iv) Assessment of test-retest reliability and internal consistency; (v) Assessment of the responsiveness, convergent validity and floor and ceiling effects. The UCOPD questionnaire assesses understanding, self-efficacy and use of key self-management skills (Section A) and satisfaction (Section B). It has good validity and practical properties, and readability was acceptable. It has good test-retest reliability (Section A: ICC range: 0.87 to 0.96; Section B: Wilcoxon: p > 0.05) and internal consistency (Cronbach's Alpha range: 0.78 to 0.95). It is responsive to pulmonary rehabilitation (Mean change: About COPD: 18.26 [12.12 to 24.40]%, Managing Symptoms 20.94 [13.86 to 28.01]%, Accessing Help and Support 24.06 [14.53 to 33.60]%, Total 20.59 [14.43 to 26.75]%, p < 0.001). It had a moderate correlation with the Bristol COPD Knowledge Questionnaire (BCKQ): pre-pulmonary rehabilitation: r = 0.41, p = 0.02; post-pulmonary rehabilitation: r = 0.35, p = 0.047. In conclusion, the UCOPD questionnaire offers the opportunity to assess the benefit of the education component of pulmonary rehabilitation in terms of its effect on understanding, self-efficacy and satisfaction. Further research is needed across different pulmonary rehabilitation settings to demonstrate the robustness of the UCOPD questionnaire, and to establish the minimum clinically important difference.

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