Roos E M, Klässbo M, Lohmander L S
Institute of Musculoskeletal Disease, Department of Physical Therapy, Lund University, Sweden.
Scand J Rheumatol. 1999;28(4):210-5. doi: 10.1080/03009749950155562.
To validate the WOMAC Osteoarthritis Index for use in Sweden.
Test-retest reliability, internal consistency, validity, and responsiveness was determined in 52 patients (mean age 48 (20-69)) with arthroscopically assessed cartilage damage of the tibio-femoral knee joint.
All WOMAC scales were internally consistent with Cronbach's alpha coefficients of 0.83, 0.87, and 0.96 pre-operatively. Test-retest reliability was satisfactory with intraclass correlation coefficients of 0.74, 0.58, and 0.92. As hypothesized worse post-operative but not pre-operative outcomes were associated with radiographic OA. In comparison with the SF-36 the expected correlations were found when comparing items measuring similar and dissimilar constructs, supporting the concepts of convergent and divergent construct validity. Three months after arthroscopy significant mean improvement was seen in all WOMAC scales (p<0.0004).
The Swedish version of WOMAC is a reliable, valid, and responsive instrument with metric properties in agreement with the original widely used version.
验证 WOMAC 骨关节炎指数在瑞典的适用性。
对 52 例（平均年龄 48 岁（20 - 69 岁））经关节镜评估存在胫股膝关节软骨损伤的患者，测定其重测信度、内部一致性、效度和反应性。
术前所有 WOMAC 量表的内部一致性良好，Cronbach's α 系数分别为 0.83、0.87 和 0.96。重测信度令人满意，组内相关系数分别为 0.74、0.58 和 0.92。正如所假设的，术后较差而非术前较差的结果与放射学骨关节炎相关。与 SF - 36 相比，在比较测量相似和不同结构的项目时发现了预期的相关性，支持了收敛效度和区分效度的概念。关节镜检查三个月后，所有 WOMAC 量表均出现显著的平均改善（p < 0.0004）。
瑞典版的 WOMAC 是一种可靠、有效且具有反应性的工具，其度量特性与最初广泛使用的版本一致。
