Cross-cultural validation of the ICOAP and physical function short forms of the HOOS and KOOS in a multi-country study of patients with hip and knee osteoarthritis

S P Mehta, A Sankar, V Venkataramanan, L S Lohmander, J N Katz, G A Hawker, L Gossec, E M Roos, J-F Maillefert, M Kloppenburg, M Dougados, A M Davis

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Abstract

OBJECTIVE: To evaluate the internal consistency and construct validity of the Physical Function short-forms for the Hip and Knee Injury Osteoarthritis Outcome Scores (HOOS-PS/KOOS-PS) and the Intermittent and Constant Osteoarthritis Pain (ICOAP) in a nine country study of patients consulting for total hip or knee replacement (THR or TKR).

METHODS: Patients completed HOOS-PS or KOOS-PS, ICOAP and Western Ontario and McMaster Universities' Osteoarthritis Index (WOMAC) pain and physical function subscales at their consultation visit. Internal consistency was calculated using Cronbach's alpha. The association of HOOS-PS/KOOS-PS and ICOAP with WOMAC pain and function subscales was calculated with Spearman correlation coefficients with 95% confidence intervals.

RESULTS: HOOS-PS/KOOS-PS and ICOAP demonstrated high internal consistency across countries (alpha 0.75-0.96 (hip) and 0.76-0.95 (knee)). Both HOOS-PS and KOOS-PS demonstrated high correlations (0.76-0.90 and 0.75-0.91, respectively) with WOMAC function in all countries. ICOAP exhibited moderate to high correlations with WOMAC pain and function subscales (0.53-0.84 (hip) and 0.43-0.84 (knee)).

CONCLUSION: The psychometric properties of the HOOS-PS/KOOS-PS, and ICOAP were maintained across all countries.

Original languageEnglish
JournalOsteoarthritis and Cartilage
Volume24
Issue number12
Pages (from-to)2077–2081
ISSN1063-4584
DOIs
Publication statusPublished - 2016

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Mehta, S. P., Sankar, A., Venkataramanan, V., Lohmander, L. S., Katz, J. N., Hawker, G. A., Gossec, L., Roos, E. M., Maillefert, J-F., Kloppenburg, M., Dougados, M., & Davis, A. M. (2016). Cross-cultural validation of the ICOAP and physical function short forms of the HOOS and KOOS in a multi-country study of patients with hip and knee osteoarthritis. Osteoarthritis and Cartilage, 24(12), 2077–2081. https://doi.org/10.1016/j.joca.2016.07.014