Reliability and Construct Validity of the Work Rehabilitation Questionnaire Domains in Patients with Persistent Low Back Pain.

IF 2.1 3区医学 Q1 REHABILITATION

Journal of Occupational Rehabilitation Pub Date : 2024-11-08 DOI:10.1007/s10926-024-10248-1

Anders Hansen, Henrik Hein Lauridsen, Reuben Escorpizo, Karen Søgaard, Jens Søndergaard, Berit Schiøttz-Christensen, Ole Steen Mortensen

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Abstract

Purpose: The Work Rehabilitation Questionnaire (WORQ) assesses patient functioning, including psychological, physical, and cognitive limitations. This study evaluates the WORQ domains in individuals with persistent low back pain (LBP), focusing on reliability and construct validity.

Methods: Individuals aged 18-65 with LBP completed WORQ and the workability index single item. A subgroup undertook sit-to-stand and 6-min walking tests and re-evaluated WORQ after 14 days. Reliability was assessed through internal consistency (McDonald's omega and Cronbach's alpha), test-retest reliability, and smallest detectable change. Construct validity was analyzed via Spearman's rank correlation and known group validity, with physical functioning also examined against sit-to-stand and 6-min walk test results for sensitivity/specificity. Floor and ceiling effects were assessed through classical and scale width methods.

Results: Of 425 participants, 149 completed physical tests, and 102 re-assessed WORQ. McDonald's omega and Cronbach's alpha indicated high internal consistency (0.92-0.96) with strong test-retest reliability (intraclass-correlation coefficients: 0.74-0.82). The smallest detectable change ranged from 4.62 to 7.82. Predictions from 7 out of 8 hypotheses were confirmed. Notable differences in domain scores were observed based on disability level and sick leave status, with varied diagnostic performance in physical functioning items. Potential floor effects were noted using the scale width method.

Conclusions: The WORQ demonstrated good reliability and satisfactory validity in assessing work-related functioning in individuals with persistent LBP. These findings support its use as a comprehensive tool for evaluating psychological, physical, and cognitive limitations. However, varied diagnostic performance in physical functioning items and potential floor effects suggest cautious interpretation in diverse clinical settings.

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顽固性腰痛患者工作康复问卷领域的可靠性和结构有效性

目的：工作康复问卷（WORQ）评估患者的功能，包括心理、生理和认知限制。本研究对持续性腰背痛（LBP）患者的 WORQ 领域进行了评估，重点关注可靠性和构建有效性：方法：年龄在 18-65 岁之间的腰背痛患者填写 WORQ 和工作能力指数单项。一部分人进行了坐立测试和 6 分钟步行测试，并在 14 天后重新评估了 WORQ。通过内部一致性（McDonald's omega 和 Cronbach's alpha）、测试-再测试可靠性和最小可检测变化来评估可靠性。结构效度通过斯皮尔曼等级相关性和已知群体效度进行分析，同时还根据坐立和 6 分钟步行测试结果对身体功能进行检查，以确定敏感性/特异性。通过经典方法和量表宽度方法评估了底线效应和上限效应：在 425 名参与者中，149 人完成了体能测试，102 人重新评估了 WORQ。McDonald's omega 和 Cronbach's alpha 均显示出较高的内部一致性（0.92-0.96）和较强的测试-再测可靠性（类内相关系数：0.74-0.82）。可检测到的最小变化范围为 4.62 至 7.82。8 项假设中有 7 项预测得到了证实。根据残疾程度和病假情况，观察到领域得分存在显著差异，身体功能项目的诊断表现各不相同。使用量表宽度法还发现了潜在的底限效应：WORQ在评估持续性腰背痛患者的工作相关功能方面表现出了良好的可靠性和令人满意的有效性。这些研究结果支持将 WORQ 作为评估心理、生理和认知限制的综合工具。然而，在不同的临床环境中，身体功能项目的诊断表现各不相同，而且可能存在底限效应，这就需要对其进行谨慎的解释。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Occupational Rehabilitation Multiple-

CiteScore

5.80

自引率

12.10%

发文量

期刊介绍： The Journal of Occupational Rehabilitation is an international forum for the publication of peer-reviewed original papers on the rehabilitation, reintegration, and prevention of disability in workers. The journal offers investigations involving original data collection and research synthesis (i.e., scoping reviews, systematic reviews, and meta-analyses). Papers derive from a broad array of fields including rehabilitation medicine, physical and occupational therapy, health psychology and psychiatry, orthopedics, oncology, occupational and insurance medicine, neurology, social work, ergonomics, biomedical engineering, health economics, rehabilitation engineering, business administration and management, and law. A single interdisciplinary source for information on work disability rehabilitation, the Journal of Occupational Rehabilitation helps to advance the scientific understanding, management, and prevention of work disability.