FORMI (Communication Unit for Musculoskeletal Disorders), Clinic for Surgery and Neurology (C1), Oslo University Hospital, Oslo, Norway.
J Rehabil Med. 2013 Jul;45(7):670-7. doi: 10.2340/16501977-1166.
The Roland-Morris Disability Questionnaire (RDQ) is one of the most frequently used and recommended outcome measures for patients with low back pain.
To examine the fit of data from 4 different versions of the RDQ to a Rasch model in a Norwegian sample of patients with chronic low back pain and degenerative lumbar osteoarthritis.
Patients with chronic low back pain and degenerative lumbar osteoarthritis completed the RDQ prior to treatment in a secondary healthcare clinic. Data were analysed using a dichotomous Rasch model.
Of 250 included patients, 243 patients with a mean age of 48.5 years completed all 24 items of the RDQ. None of the 4 RDQ versions (the original 24-item, the 18-item versions of Williams and Stratford, and the 11-item of Stroud) were a unidimensional measure of disability due to low back pain. Items 3 and 23 were redundant and items 13 and 18 did not fit the Rasch model. Several items showed differential item functioning, indicating that the items performed differently in subgroups of the sample.
In the absence of consistent findings across studies that have evaluated the RDQ by Rasch analysis, caution should be exercised in the development and application of alternative versions of the RDQ.
罗伦兹-莫里斯残疾问卷（RDQ）是最常使用和推荐的用于腰痛患者的结果测量方法之一。
在挪威慢性腰痛和退行性腰椎骨关节炎患者的样本中，用 RASCH 模型检验 4 种不同版本 RDQ 的数据拟合情况。
慢性腰痛和退行性腰椎骨关节炎患者在二级保健诊所接受治疗前完成 RDQ。使用二项 RASCH 模型对数据进行分析。
在 250 名纳入的患者中，243 名平均年龄为 48.5 岁的患者完成了 RDQ 的所有 24 个项目。由于腰痛，没有任何一个 RDQ 版本（原始的 24 项、Williams 和 Stratford 的 18 项和 Stroud 的 11 项）是残疾的一维测量方法。项目 3 和 23 是多余的，项目 13 和 18 不符合 RASCH 模型。一些项目表现出不同的项目功能，表明这些项目在样本的子组中表现不同。
在通过 RASCH 分析评估 RDQ 的研究中没有一致的发现，因此在开发和应用 RDQ 的替代版本时应谨慎。
