Center of Excellence for Rehabilitation Medicine, UMC Utrecht Brain Center, University Medical Center Utrecht and De Hoogstraat Rehabilitation, Utrecht, the Netherlands; University of Groningen, University Medical Center Groningen, Department of Rehabilitation Medicine, Groningen, the Netherlands.
Swiss Paraplegic Research, Nottwil, Switzerland.
Arch Phys Med Rehabil. 2022 Nov;103(11):2120-2130. doi: 10.1016/j.apmr.2022.02.018. Epub 2022 Mar 18.
To examine the internal construct validity of the International Spinal Cord Injury Quality of Life Basic Data Set Version 2.0 (QoL-BDS V2.0) and compare this with the internal construct validity of the original version of the QoL-BDS.
International cross-sectional psychometric study.
Spinal rehabilitation units, clinics, and community.
The study involved 5 sites and 4 countries, 2 of whose primary language is not English. Each site included a consecutive sample of inpatients with spinal cord injury or disease (SCI/D) and a convenience sample of individuals with SCI/D living in the community (N=565).
The QoL-BDS V2.0 consists of the 3 original items on satisfaction with life as a whole, physical health, psychological health of the QoL-BDS, and an additional item on satisfaction with social life. All 4 items are answered on a 0-10 numeric rating scale. Rasch analysis was performed on versions 1.0 and 2.0 of the QoL-BDS to examine the ordering of the items' response options, item scaling, reliability, item fit, local item independence, differential item functioning, and unidimensionality.
The sample included 565 participants with 57% outpatients and 43% inpatients. Mean age was 51.4 years; 71% were male; 65% had a traumatic injury, 40% had tetraplegia, and 67% were wheelchair users. Item thresholds were collapsed for ordering, and subsequent analyses showed good internal construct validity for the QoL-BDS V2.0 with a person separation reliability of 0.76 and Cronbach α of 0.81. Infit and outfit statistics ranged 0.62-0.91. No local dependencies and multidimensionality were found. Differential item functioning was observed only for country and inpatients vs outpatients but not for other participants' characteristics. Differences in internal construct validity between the 3-item and 4-item versions were minimal.
The results of this Rasch analysis support the internal construct validity of the QoL-BDS V2.0.
检验国际脊髓损伤生活质量基本数据集第 2.0 版（QoL-BDS V2.0）的内部结构效度，并与 QoL-BDS 的原始版本的内部结构效度进行比较。
国际横断面心理测量研究。
脊髓康复单位、诊所和社区。
研究涉及 5 个地点和 4 个国家，其中 2 个国家的主要语言不是英语。每个地点都包括连续的脊髓损伤或疾病（SCI/D）住院患者样本和居住在社区的 SCI/D 患者的便利样本（N=565）。
QoL-BDS V2.0 由 QoL-BDS 的 3 个原始项目组成，分别是对生活整体的满意度、身体健康、心理健康，以及一个关于对社会生活满意度的附加项目。所有 4 个项目都在 0-10 的数字评分量表上回答。对 QoL-BDS 的版本 1.0 和 2.0 进行了 Rasch 分析，以检验项目反应选项的排序、项目标度、可靠性、项目拟合、局部项目独立性、区别项目功能和单维性。
样本包括 565 名参与者，其中 57%为门诊患者，43%为住院患者。平均年龄为 51.4 岁；71%为男性；65%为创伤性损伤，40%为四肢瘫痪，67%为轮椅使用者。为了进行排序，对项目阈值进行了合并，随后的分析表明，QoL-BDS V2.0 的内部结构效度较好，个人分离可靠性为 0.76，Cronbach α 为 0.81。Infit 和 outfit 统计范围在 0.62-0.91 之间。未发现局部依赖和多维性。仅观察到国家和住院患者与门诊患者之间的区别项目功能，但未观察到其他参与者特征的区别项目功能。3 项和 4 项版本之间的内部结构效度差异很小。
这项 Rasch 分析的结果支持 QoL-BDS V2.0 的内部结构效度。
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