Communication and Research Unit for Musculoskeletal Disorders (FORMI), Oslo University Hospital and University of Oslo, Building 37B, Nydalen, Box 4956, 0424 Oslo, Norway.
Eur Spine J. 2012 Dec;21(12):2539-49. doi: 10.1007/s00586-012-2393-x. Epub 2012 Jun 14.
The Core Outcome Measures Index (COMI) is a short multidimensional scale covering all domains recommended to be included as outcome measures for patients with low back pain (LBP). The purpose of the present study was to translate and cross-culturally adapt the COMI into Norwegian and to test clinimetric properties of the Norwegian COMI version in patients with non-specific LBP recruited from various clinical settings.
Ninety patients with non-specific LBP from primary care and hospital settings participated in the validation part and 61 also in the reproducibility part of the study (1 week apart). Acceptability, data quality, reproducibility and construct validity were investigated.
The questionnaire was well accepted and with little missing data and end effects. Reliability in terms of intraclass correlations (ICC) was satisfactory for the COMI index [0.89 (95 % CI 0.82-0.94)] and most single-core items. Agreement was acceptable for the COMI index [standard error of measurement (SEM(agreement)) 0.80, minimal detectable change (MDC(individual)) 2.21], but exceeded the minimal standard of acceptability in some of the individual core items. Construct validity was acceptable for the COMI index.
The Norwegian version of the COMI index shows acceptable clinimetric properties in our patient population, but some of the sub-items had shortcomings. Our study, however, support the usefulness of the COMI index as an applicable stand-alone global scale when a light respondent burden is advisable.
核心结局测量指标（COMI）是一种简短的多维量表，涵盖了所有被推荐作为腰痛（LBP）患者结局测量指标的领域。本研究的目的是将 COMI 翻译成挪威语，并在来自各种临床环境的非特异性 LBP 患者中测试挪威语 COMI 版本的临床测量学特性。
90 名来自初级保健和医院环境的非特异性 LBP 患者参加了验证部分，其中 61 名患者还参加了研究的可重复性部分（相隔 1 周）。评估了可接受性、数据质量、可重复性和结构有效性。
问卷的接受程度良好，数据缺失和末端效应较少。基于组内相关系数（ICC）的可靠性对于 COMI 指数[0.89（95%置信区间 0.82-0.94）]和大多数单个核心项目来说是令人满意的。COMI 指数的一致性可接受[测量误差的标准误（agreement）为 0.80，个体的最小可检测变化（MDC（individual））为 2.21]，但在一些个别核心项目中超过了可接受的最小标准。COMI 指数的结构有效性是可接受的。
在我们的患者群体中，COMI 指数的挪威语版本具有可接受的临床测量学特性，但一些子项目存在缺陷。然而，我们的研究支持 COMI 指数作为一种可行的独立全球量表的有用性，当建议减轻应答者负担时。
