Use of an Australian Quality of Life Tool in Patients with COPD

Johanna Paddison, Paul Cafarella, Peter Frith

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)

    Abstract

    COPD is a leading chronic disease, increasing globally. Given this condition's irreversible and progressive nature, health-related quality of life (HRQOL) is increasingly a primary end-point in COPD management. We evaluated several HRQOL tools with a primary goals of (1) investigating how the generic Assessment Quality of Life (AQOL) functions compared to the Medical Outcomes Study 36-item Short Form Health Survey (SF36) and the St. Georges Respiratory Questionnaire (SGRQ); and (2) considering the extent to which clinical disease severity, as measured by the BODE index, predicts variation in HRQOL reports. Methods: 134 consecutive patients entering a pulmonary rehabilitation program were recruited. Participants completed two generic measures of HRQOL (SF36 and AQOL) and one disease specific measure (SGRQ). The clinical severity of COPD was assessed using a composite global COPD severity score, BODE. Results: Significant associations were demonstrated between AQOL and both the SF36 (r = .68) and SGRQ (r = -.60). BODE significantly predicted AQOL scores (R = -.31); mMRC (R = -.36) and 6MWD (R = .39) were stronger contributors to these predictions than were FEV1 or BMI. Conclusions: This study establishes convergent validity between AQOL, and the SF36 and SGRQ in patients with COPD. For future studies wishing to examine HRQOL from a generic perspective, we have shown that during cross-sectional analyses AQOL performs similarly to the SF36. In addition we identified that the clinical severity of COPD, as assessed by BODE, significantly influences reports of quality of life made using AQOL. The components of BODE that most strongly contributed to predicting HRQOL were dsypnea and exercise tolerance.

    Original languageEnglish
    Pages (from-to)585-595
    Number of pages11
    JournalCOPD: Journal of Chronic Obstructive Pulmonary Disease
    Volume9
    Issue number6
    DOIs
    Publication statusPublished - Dec 2012

    Keywords

    • Australian Quality of Life.
    • BODE
    • Convergent validity
    • COPD
    • Disease severity
    • Quality of life

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