Alnahdi Ali H
Department of Rehabilitation Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia.
King Salman Center for Disability Research, Riyadh, Saudi Arabia.
Spine (Phila Pa 1976). 2025 Mar 15;50(6):E103-E109. doi: 10.1097/BRS.0000000000005223. Epub 2024 Nov 27.
Cross-sectional study.
To evaluate the structural validity of the Arabic version of the Oswestry disability index (ODI) in patients with low back pain (LBP).
The Arabic ODI is currently used in clinical and research settings to assess disability, but questions remain regarding its structural validity.
Adult patients with LBP were recruited from physical therapy departments of two hospitals in Saudi Arabia. Participants completed the Arabic ODI and the numeric pain rating scale. Exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) were conducted to examine the factor structure of the ODI. Maximum likelihood extraction and parallel analysis were used in the EFA, and the goodness-of-fit indices [χ 2 statistics, Tucker-Lewis index (TLI), comparative-fit index (CFI), root mean square error of approximation (RMSEA), and standardized root mean residual (SRMR)] were assessed in the CFA to confirm the factor structure.
A total of 113 patients (47.8% male, 52.2% female) participated. The EFA identified a unidimensional structure for the Arabic ODI, with one factor explaining 45.8% of the total variance. All items had significant factor loadings, with loadings ranging from 0.48 (sleeping) to 0.84 (sex life and social life). The CFA confirmed this unidimensional structure, yielding good fit indices [χ 2 =49.53, P <0.04; TLI=0.96; CFI=0.97; RMSEA=0.06 (90% CI=0.07-0.10), SRMR=0.04]. All ODI items exhibited significant positive loadings consistent with the expected correlation between the single latent variable (LBP-related disability) and the ODI items. A high error covariance was observed between items related to walking and standing.
The Arabic Oswestry disability index demonstrates sufficient structural validity as a unidimensional measure of disability in Arabic-speaking patients with low back pain. These findings support the continued use of the Oswestry disability index for disability assessment in clinical and research settings and support the validity of using one total score representing the single underlying latent construct.
Level III.
横断面研究。
评估阿拉伯语版奥斯威斯利残疾指数（ODI）在腰痛（LBP）患者中的结构效度。
目前阿拉伯语版ODI在临床和研究中用于评估残疾情况，但关于其结构效度仍存在疑问。
从沙特阿拉伯两家医院的理疗科招募成年LBP患者。参与者完成阿拉伯语版ODI和数字疼痛评分量表。进行探索性因素分析（EFA）和验证性因素分析（CFA）以检验ODI的因素结构。EFA中使用最大似然提取法和平行分析，CFA中评估拟合优度指标[χ²统计量、塔克-刘易斯指数（TLI）、比较拟合指数（CFI）、近似均方根误差（RMSEA）和标准化均方根残差（SRMR）]以确认因素结构。
共113例患者参与（男性47.8%，女性52.2%）。EFA确定阿拉伯语版ODI为单维结构，一个因素解释总方差的45.8%。所有条目具有显著的因素负荷，负荷范围从0.48（睡眠）至0.84（性生活和社会生活）。CFA证实了这种单维结构，产生良好的拟合优度指标[χ² = 49.53，P < 0.04；TLI = 0.96；CFI = 0.97；RMSEA = 0.06（90%CI = 0.07 - 0.10），SRMR = 0.04]。所有ODI条目均表现出显著的正负荷，与单一潜在变量（LBP相关残疾）和ODI条目之间的预期相关性一致。在与行走和站立相关的条目之间观察到高误差协方差。
阿拉伯语版奥斯威斯利残疾指数作为一种单维测量方法，在讲阿拉伯语的腰痛患者中具有足够的结构效度来评估残疾情况。这些发现支持在临床和研究环境中继续使用奥斯威斯利残疾指数进行残疾评估，并支持使用代表单一潜在结构的一个总分的有效性。
三级。
