ABSTRACT

Background: Generic preference-based measures are used to evaluate disability and health-related quality of life (HRQoL).

Objective: To evaluate if Short Form Six-Dimensions (SF-6Dv2) is correlated with specific current questionnaires used in chronic low back pain (CLBP) and if a predictive equation of SF-6Dv2 could be established.

Methods: Between October 2018 and January 2019, an online survey on CLBP was conducted. HRQoL was measured with two specific questionnaires, i.e. Oswestry Disability Index (ODI) and Roland-Morris Disability Questionnaire (RMDQ), and with the new version of the SF-6Dv2 as a generic preference-based measure.

Results: 402 subjects completed at least two of the three HRQoL questionnaires. Mean (95% confidence interval) of SF-6Dv2, ODI, or RMDQ were, respectively, 0.561 (0.553–0.569), 43.7 (42.1–45.2), and 10.3 (9.8–10.8). SF-6Dv2 was moderately correlated with ODI and RMDQ (r = −0.635 and r = −0.542, p < 0.001). The best model to predict SF-6Dv2 explained 50.6% of variability and included ODI. The correlation between actual and predicted SF-6Dv2 was 0.71.

Conclusion: This study demonstrated that SF-6Dv2 was moderately correlated with ODI and RMDQ and that ODI was a better predictor. There was a strong correlation between actual and predicted SF-6Dv2 from multivariate models. These results suggest that the model can be used in similar studies to estimate the SF-6Dv2 when it was not measured.

摘要

背景：基于通用偏爱的措施用于评估残疾和与健康相关的生活质量（HRQoL）。

目的：评估短格式六维（SF-6Dv2）是否与当前用于慢性腰背痛（CLBP）的特定问卷相关联，以及是否可以建立SF-6Dv2的预测方程。

方法：2018年10月至2019年1月，对CLBP进行了在线调查。HRQoL使用两项特定的问卷进行测量，即Oswestry残疾指数（ODI）和Roland-Morris残疾问卷（RMDQ），以及新版本的SF-6Dv2作为基于偏好的通用度量。

结果：402名受试者至少完成了三份HRQoL问卷中的两份。SF-6Dv2，ODI或RMDQ的平均值（95％置信区间）分别为0.561（0.553-0.569），43.7（42.1-45.2）和10.3（9.8-10.8）。SF-6Dv2与ODI和RMDQ适度相关（r = -0.635和r = -0.542，p <0.001）。预测SF-6Dv2的最佳模型解释了50.6％的变异性，其中包括ODI。实际和预测的SF-6Dv2之间的相关系数是0.71。

结论：这项研究表明SF-6Dv2与ODI和RMDQ有中等程度的相关性，ODI是更好的预测指标。来自多变量模型的实际SF-6Dv2与预测的SF-6Dv2有很强的相关性。这些结果表明，该模型可用于类似的研究中，以在未测量时估计SF-6Dv2。