• Eur J Pain · Nov 2018

    Reliability and validity of the Brief Pain Inventory in individuals with chronic obstructive pulmonary disease.

    • Y-W Chen, B HajGhanbari, J D Road, H O Coxson, P G Camp, and W D Reid.
    • Department of Physical Therapy, University of British Columbia, Vancouver, BC, Canada.
    • Eur J Pain. 2018 Nov 1; 22 (10): 1718-1726.

    BackgroundPain is prevalent in chronic obstructive pulmonary disease (COPD) and the Brief Pain Inventory (BPI) appears to be a feasible questionnaire to assess this symptom. However, the reliability and validity of the BPI have not been determined in individuals with COPD. This study aimed to determine the internal consistency, test-retest reliability and validity (construct, convergent, divergent and discriminant) of the BPI in individuals with COPD.MethodsIn order to examine the test-retest reliability, individuals with COPD were recruited from pulmonary rehabilitation programmes to complete the BPI twice 1 week apart. In order to investigate validity, de-identified data was retrieved from two previous studies, including forced expiratory volume in 1-s, age, sex and data from four questionnaires: the BPI, short-form McGill Pain Questionnaire (SF-MPQ), 36-Item Short Form Survey (SF-36) and Community Health Activities Model Program for Seniors (CHAMPS) questionnaire.ResultsIn total, 123 participants were included in the analyses (eligible data were retrieved from 86 participants and additional 37 participants were recruited). The BPI demonstrated excellent internal consistency and test-retest reliability. It also showed convergent validity with the SF-MPQ and divergent validity with the SF-36. The factor analysis yielded two factors of the BPI, which demonstrated that the two domains of the BPI measure the intended constructs. The BPI can also discriminate pain levels among COPD patients with varied levels of quality of life (SF-36) and physical activity (CHAMPS).ConclusionThe BPI is a reliable and valid pain questionnaire that can be used to evaluate pain in COPD.SignificanceThis study formally established the reliability and validity of the BPI in individuals with COPD, which have not been determined in this patient group. The results of this study provide strong evidence that assessment results from this pain questionnaire are reliable and valid.© 2018 European Pain Federation - EFIC®.

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