Validity and reliability of the Persian versions of WOMAC Osteoarthritis Index and Lequesne Algofunctional Index

Nadrian, Haidar, Moghimi, Nasrin, Nadrian, Elham, Moradzadeh, Rahmatollah, Bahmanpour, Kaveh, Iranpour, Abedin and Bellamy, Nicholas (2012) Validity and reliability of the Persian versions of WOMAC Osteoarthritis Index and Lequesne Algofunctional Index. Journal of Clinical Rheumatology, Online First 7: 1097-1102.

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Author Nadrian, Haidar
Moghimi, Nasrin
Nadrian, Elham
Moradzadeh, Rahmatollah
Bahmanpour, Kaveh
Iranpour, Abedin
Bellamy, Nicholas
Title Validity and reliability of the Persian versions of WOMAC Osteoarthritis Index and Lequesne Algofunctional Index
Journal name Journal of Clinical Rheumatology   Check publisher's open access policy
ISSN 1076-1608
1536-7355
Publication date 2012
Sub-type Article (original research)
DOI 10.1007/s10067-012-1983-7
Volume Online First
Issue 7
Start page 1097
End page 1102
Total pages 6
Place of publication Philadelphia, PA, U.S.A.
Publisher Lippincott Williams & Wilkins
Collection year 2013
Language eng
Formatted abstract The WOMAC Osteoarthritis Index and Lequesne Algofunctional Index have not been translated and validated for Iranian patients with osteoarthritis (OA) of the knee or hip. The aim of this study was to validate the Persian form of WOMAC OA Index and Lequesne Algofunctional Index and to assess their test–retest reliability and convergent validity. Forward/backward translations and consensus panels were conducted to obtain the Persian versions of WOMAC OA Index and Lequesne Algofunctional Index. A non-probability sample of 116 patients with knee/hip osteoarthritis was asked to complete the WOMAC OA Index and Lequesne Algofunctional Index as well as Medical Outcomes Study—20-Item Short Form (SF-20) questionnaires, a visual analogue scales (VAS) of pain and demographic information form. Internal consistency (using Cronbach’s alpha) and convergent validity (by examining the Pearson’s correlation coefficients) were evaluated to determine the psychometric properties of the questionnaires. In order to evaluate test–retest reliability, 20 randomly selected patients completed the questionnaires, on a second occasion, 7–10 days later. Cronbach’s alpha coefficients and intraclass correlation coefficients for the WOMAC OA Index and Algofunctional Index subscales ranged from 0.63 to 0.94 and from 0.53 to 0.96, respectively. Statistically significant correlations were found between WOMAC OA Index, Algofunctional Index and SF-20 subscales and VAS for pain. The Persian version of WOMAC demonstrated a more acceptable validity, internal consistency and reliability compared with the Lequesne Algofunctional Index. However, both indices are valid and reliable instruments for evaluating the OA severity of knee/hip in Iran.
Keyword Health status
Lequesne algofunctional index
Medical outcomes study
20-item short form (SF-20)
Osteoarthritis
WOMAC osteoarthritis index
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
School of Medicine Publications
 
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Created: Tue, 24 Apr 2012, 10:54:51 EST by Chesne McGrath on behalf of Medicine - Royal Brisbane and Women's Hospital