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Evaluation of the Personal Impact Health Assessment Questionnaire (PI HAQ) to capture the impact of disability in osteoarthritis.

Wylde, Vikki; Livesey, Christine; Learmonth, Ian D.; Blom, Ashley W.; Hewlett, Sarah

Authors

Vikki Wylde

Christine Livesey

Ian D. Learmonth

Ashley W. Blom



Abstract

Aim: Measuring facts about disability may not reflect their personal impact. An individualized values instrument has been used to weight difficulty in performing activities of daily living in rheumatoid arthritis, and calculate personal impact (Personal Impact Health Assessment Questionnaire; PI HAQ). This study aimed to evaluate the PI HAQ in osteoarthritis (OA).
Study design: Study 1: 51 people with OA completed short and long versions of the value instrument at 0 and 1 week. Study 2: 116 people with OA completed the short value instrument, disability and psychological measures at 0 and 4 weeks.
Results: Study 1: The eight-category and 20-item value instruments correlated well (r = 0.85) and scores differed by just 2.7%. The eight-category instrument showed good internal consistency reliability (Cronbach's = 0.85) and moderate one-week test-retest reliability (r = 0.68, Wilcoxon signed-rank test p = 0.16, intra-class correlation coefficient [ICC] 0.62). Study 2: Values for disability were not associated with disability severity or clinical status. After weighting disability by value, the resulting PI HAQ scores were significantly associated with dissatisfaction with disability, perceived increase in disability, poor clinical status and life dissatisfaction, and differed significantly between people with high and low clinical status (convergent and discriminant construct validity). There was moderate association with the disease repercussion profile disability subscale (r = 0.511; p < 0.001) (criterion validity). The PI HAQ was stable over four weeks (ICC 0.81).
Conclusions: These studies provide an initial evaluation of an instrument to measure the personal impact of disability in people with OA, setting disability within a personal context. Further studies, including sensitivity to change, are required.

Citation

Wylde, V., Livesey, C., Learmonth, I. D., Blom, A. W., & Hewlett, S. (2010). Evaluation of the Personal Impact Health Assessment Questionnaire (PI HAQ) to capture the impact of disability in osteoarthritis. Musculoskeletal Care, 8(2), 87-98. https://doi.org/10.1002/msc.170

Journal Article Type Article
Online Publication Date Mar 15, 2010
Publication Date Jun 1, 2010
Journal Musculoskeletal Care
Print ISSN 1478-2189
Electronic ISSN 1557-0681
Publisher Wiley
Peer Reviewed Peer Reviewed
Volume 8
Issue 2
Pages 87-98
DOI https://doi.org/10.1002/msc.170
Public URL https://uwe-repository.worktribe.com/output/981089
Publisher URL http://dx.doi.org/10.1002/msc.170