Measurement properties of the short version of the Western Ontario and McMaster Universities Arthritis Index (WOMAC) for individuals with knee osteoarthritis

BMC Musculoskeletal Disorders

Research

Jhonata Botelho Protázio¹  Almir Vieira Dibai-Filho¹  Patrícia Gabrielle dos Santos²  Inaê Silva Santos²  Daniella Dias de Oliveira²  José Djalma Arrais Júnior²  José Edson França da Silva Júnior²  Cid André Fidelis-de-Paula-Gomes² 

[1] Postgraduate Program in Physical Education, Universidade Federal do Maranhão, São Luís, MA, Brazil;Postgraduate Program in Rehabilitation Sciences, Nove de Julho University, Rua Vergueiro, 235/249, Liberdade, CEP 01504-001, São Paulo, SP, Brazil;

关键词: Reproducibility of results;    Knee osteoarthritis;    Pain measurement;    Chronic pain;    Surveys;    And questionnaires;   

DOI  :  10.1186/s12891-023-06696-0

 received in 2023-03-16, accepted in 2023-07-04,  发布年份 2023

来源: Springer

【 摘 要 】

BackgroundAssessment instruments play an essential role in the management of knee osteoarthritis. This study aimed to verify the clinimetric properties and validate the short version of WOMAC’s (SV-WOMAC) knee with two domains, pain (four items) and physical function (eight items) in individuals with knee osteoarthritis (KO).MethodsReliability and internal consistency Construct, criterion validity, Ceiling, and floor effects analyses were performed. In addition to the SV-WOMAC, the following instruments were used: the numerical rating scale (NRPS), International Knee Documentation Committee (IKDC), the Short Form Health Survey (SF-36), and WOMAC’s original version. Spearman’s correlation coefficient (rho) was used to determine the magnitude of the correlation between the AFAQ and the other instruments. Moreover, the test–retest reliability and internal consistency were assessed using the intraclass correlation coefficient (ICC) and Cronbach’s alpha, respectively. In addition, standard error of measurement (SEM) and minimum detectable change (MDC) were calculated.ResultsOne hundred and thirteen subjects with KO were included for validity analysis, and a subsample of 53 subjects was used for test-retest reliability. Adequate reliability and internal consistency were observed with ICC ≥ 0.76, SEM ≤ 1.85, MDC ≥ 5.1, and Cronbach’s alpha ≥ 0.84. Regarding construct validity, correlations greater than 0.50 were observed with the IKDC, NRPS, and functional domains of the SF-36. The SV-WOMAC showed a correlation > 0.70 with the original version and did not show ceiling and floor effects.ConclusionThe SV-WOMAC knee has adequate measurement properties to analyze pain and physical function in Brazilian individuals with KO.

【 授权许可】

CC BY   
© The Author(s) 2023