Research Department, Craig Hospital, Englewood, CO, USA.
Department of Physical Medicine and Rehabilitation, Virginia Commonwealth University, Richmond, VA, USA.
Spinal Cord. 2021 Nov;59(11):1177-1186. doi: 10.1038/s41393-021-00645-1. Epub 2021 May 29.
Retrospective analysis of cross-sectional data.
To verify the factor structure of the Injustice Experience Questionnaire (IEQ) using a sample of individuals with spinal cord injury (SCI) and to assess IEQ scale reliability and construct validity using the same population.
Two SCI rehabilitation sites in the United States.
Three datasets were combined to conduct this validation study. The sample consisted of 341 adults with SCI who completed the IEQ, measures of psychological distress and pain, and provided sociodemographic and injury-related information. A series of confirmatory factor analyses (CFA) and exploratory factor analyses (EFA) were conducted to verify the two-factor structure of the IEQ, Cronbach's alpha was used to demonstrate scale reliability, and correlations between the IEQ and measures of pain and psychological distress were examined to assess construct validity.
Poor model fit was observed for the two-factor structure of the IEQ as well as for the subsequent factor-structures that were explored. The IEQ demonstrated strong scale reliability (α = 0.89) and correlations between the IEQ and measures of pain and psychological distress were in the expected direction, indicating good construct validity.
In this preliminary validation study, we failed to confirm the two-factor structure of the IEQ in a population of individuals with SCI. Though good scale reliability and construct validity were observed, further study is needed to refine the IEQ for use in this population.
回顾性横断面数据分析。
使用脊髓损伤（SCI）患者样本验证不公正体验问卷（IEQ）的因子结构，并使用相同人群评估 IEQ 量表的信度和结构效度。
美国两个 SCI 康复中心。
本验证研究合并了三个数据集。样本包括 341 名完成 IEQ、心理困扰和疼痛测量以及提供社会人口学和损伤相关信息的成年人。进行了一系列验证性因子分析（CFA）和探索性因子分析（EFA），以验证 IEQ 的两因素结构，使用 Cronbach's alpha 来证明量表的可靠性，IEQ 与疼痛和心理困扰测量之间的相关性来评估结构效度。
IEQ 的两因素结构以及随后探索的因素结构的模型拟合较差。IEQ 具有很强的量表可靠性（α=0.89），IEQ 与疼痛和心理困扰测量之间的相关性呈预期方向，表明具有良好的结构效度。
在这项初步验证研究中，我们未能在 SCI 患者人群中确认 IEQ 的两因素结构。虽然观察到了良好的量表可靠性和结构效度，但需要进一步研究来改进该问卷在该人群中的使用。
