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PROMIS 疼痛干扰项目库在社区和临床样本中的测量不变性。

Measurement invariance of the PROMIS pain interference item bank across community and clinical samples.

机构信息

Department of Rehabilitation Medicine, University of Washington, Seattle, WA 98195, USA.

出版信息

Qual Life Res. 2013 Apr;22(3):501-7. doi: 10.1007/s11136-012-0191-x. Epub 2012 May 3.

Abstract

PURPOSE

This study examined the measurement invariance of responses to the patient-reported outcomes measurement information system (PROMIS) pain interference (PI) item bank. The original PROMIS calibration sample (Wave I) was augmented with a sample of persons recruited from the American Chronic Pain Association (ACPA) to increase the number of participants reporting higher levels of pain. Establishing measurement invariance of an item bank is essential for the valid interpretation of group differences in the latent concept being measured.

METHODS

Multi-group confirmatory factor analysis (MG-CFA) was used to evaluate successive levels of measurement invariance: configural, metric, and scalar invariance.

RESULTS

Support was found for configural and metric invariance of the PROMIS-PI, but not for scalar invariance.

CONCLUSIONS AND RECOMMENDATIONS

Based on our results of MG-CFA, we recommend retaining the original parameter estimates obtained by combining the community sample of Wave I and ACPA participants. Future studies should extend this study by examining measurement equivalence in an item response theory framework such as differential item functioning analysis.

摘要

目的

本研究检验了患者报告结局测量信息系统(PROMIS)疼痛干扰(PI)项目库对响应的测量不变性。原始的 PROMIS 校准样本(Wave I)通过从美国慢性疼痛协会(ACPA)招募的样本进行扩充,以增加报告更高水平疼痛的参与者数量。建立项目库的测量不变性对于有效解释所测量的潜在概念的群体差异至关重要。

方法

多组验证性因子分析(MG-CFA)用于评估逐步的测量不变性水平:结构、度量和标度不变性。

结果

支持 PROMIS-PI 的结构和度量不变性,但不支持标度不变性。

结论和建议

基于我们的 MG-CFA 结果,我们建议保留通过结合 Wave I 的社区样本和 ACPA 参与者获得的原始参数估计值。未来的研究应通过在项目反应理论框架(例如差异项目功能分析)中检查测量等效性来扩展这项研究。

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