Alnahdi Ali H, Almutairi Mohammed S, Aldaihan Mishal M, Alsubiheen Abdulrahman M
Department of Rehabilitation Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia.
King Salman Center for Disability Research, Riyadh, Saudi Arabia.
Disabil Rehabil. 2025 May 21:1-8. doi: 10.1080/09638288.2025.2507719.
To assess the responsiveness of the Arabic Patient-Specific Functional Scale (PSFS) and to determine its minimal important change (MIC) for improvement in upper extremity function.
A total of 115 participants with upper extremity musculoskeletal disorders were included. The PSFS, Disabilities of the Arm, Shoulder, and Hand (DASH), global assessment of function (GAF), and numeric pain rating scale (NPRS), were assessed at baseline and follow-up. Responsiveness was examined by testing seven pre-defined hypotheses and the MIC was determined using the predictive modeling method (MIC) and the receiver operating curve method (MIC).
The PSFS change scores demonstrated significant correlations with the global rating of change ( = 0.75), with change scores in DASH ( = 0.76), GAF ( = 0.62), NPRS ( = 0.66), large effect size (ES = 2.34, SRM = 1.63) in improved individuals, and area under the ROC curve of 0.91. The MIC, MIC and adjusted MIC for proportion of improved participants were 1.71, 1.98, and 2.15 points, respectively, and that the value of MIC was not dependent on baseline status.
The Arabic PSFS showed sufficient responsiveness in detecting changes in upper extremity function over time. The adjusted MIC is recommended to be used as the MIC value in patients with upper extremity musculoskeletal disorders.
评估阿拉伯语患者特异性功能量表（PSFS）的反应性，并确定其在上肢功能改善方面的最小重要变化（MIC）。
共纳入115例上肢肌肉骨骼疾病患者。在基线和随访时评估PSFS、手臂、肩部和手部功能障碍量表（DASH）、功能总体评估（GAF）和数字疼痛评分量表（NPRS）。通过检验七个预先定义的假设来检查反应性，并使用预测建模方法（MIC）和受试者工作特征曲线方法（MIC）确定MIC。
PSFS变化分数与总体变化评分（r = 0.75）、DASH变化分数（r = 0.76）、GAF变化分数（r = 0.62）、NPRS变化分数（r = 0.66）、改善个体的大效应量（ES = 2.34，SRM = 1.63）以及ROC曲线下面积为0.91显著相关。改善参与者比例的MIC、MIC和调整后的MIC分别为1.71、1.98和2.15分，且MIC值不依赖于基线状态。
阿拉伯语PSFS在检测上肢功能随时间的变化方面显示出足够的反应性。建议将调整后的MIC用作上肢肌肉骨骼疾病患者的MIC值。
