Determination of Perceived Levels of Physical Work Demand Thresholds, and Reliability and Responsiveness of the Modified-Spinal Function Sort Questionnaire in a Multidisciplinary Occupational Rehabilitation Setting,Journal of Occupational Rehabilitation

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Determination of Perceived Levels of Physical Work Demand Thresholds, and Reliability and Responsiveness of the Modified-Spinal Function Sort Questionnaire in a Multidisciplinary Occupational Rehabilitation Setting
Journal of Occupational Rehabilitation ( IF 2.1 ) Pub Date : 2021-03-24 , DOI: 10.1007/s10926-021-09968-5
Cyrille Burrus _{1,

2} , Philippe Vuistiner ₂ , Bertrand Léger ₂ , François Luthi _{1,

2,

3}

Affiliation

Purpose

To determine the levels of perceived work demand capacity corresponding to the Modified Spinal Function Sort (M-SFS) score and precise reliability validity and responsiveness.

Methods

This prospective validation study included patients with chronic musculoskeletal impairments who underwent multidisciplinary occupational rehabilitation. After determining the percentiles of the work demand thresholds corresponding to the spinal function sort (SFS), the percentiles were transposed to the M-SFS. Reliability was assessed using the intraclass correlation coefficient and limits of agreement. Correlations with other questionnaires and a lifting task were measured to assess validity. Responsiveness was determined using anchor- and distribution-based approaches.

Results

288 patients were included. The following thresholds were obtained for the M-SFS: 0–43 points, minimal; 44–50, very light; 51–58, light; 59–64, light to medium; 65–70, medium; 71–76, heavy; and 77–80, very heavy. Reliability was confirmed. The correlation between the M-SFS and SFS scores was good at 0.89 (95% CI, 0.86–0.91) and moderate according to the PILE-test result of 0.60 (95% CI, 0.50–0.67). We could not calculate a valid anchor-based minimal clinically important difference. The standard error of measurement was 3.9 points, and the smallest detectable change was 10.8 points.

Conclusions

On the basis of the comparison of the M-SFS and SFS scores, the M-SFS score can be interpreted in relation to the levels of work demand. This study confirms the good reliability and validity of the M-SFS questionnaire in assessing perceived physical capacity. Further studies are needed to determine its responsiveness.

中文翻译：

在多学科职业康复环境中确定体力工作需求阈值的感知水平以及改良脊柱功能排序问卷的可靠性和响应性

目的

确定与修正脊柱功能分类 (M-SFS) 分数相对应的感知工作需求能力水平以及精确的可靠性有效性和响应性。

方法

这项前瞻性验证研究包括接受多学科职业康复的慢性肌肉骨骼损伤患者。在确定与脊柱功能分类 (SFS) 相对应的工作需求阈值的百分位数后，将百分位数转置到 M-SFS。使用组内相关系数和协议限度来评估可靠性。测量与其他问卷和提升任务的相关性以评估有效性。响应性是使用基于锚和基于分布的方法确定的。

结果

包括 288 名患者。M-SFS 获得了以下阈值：0-43 分，最小；44-50，很轻；51-58，轻；59-64，轻到中；65-70，中等；71-76，重；和 77-80，非常重。可靠性得到确认。根据 PILE 测试结果 0.60（95% CI，0.50-0.67），M-SFS 和 SFS 评分之间的相关性良好，为 0.89（95% CI，0.86-0.91），中等。我们无法计算有效的基于锚的最小临床重要差异。测量的标准误差为 3.9 分，可检测到的最小变化为 10.8 分。