Chou Chia-Yeh, Huang Chien-Yu, Lee Shih-Chieh, Hsueh I-Ping, Hsieh Ching-Lin
Department of Occupational Therapy, College of Medicine, Fu-Jen Catholic University, New Taipei City, Taiwan.
School of Occupational Therapy, College of Medicine, National Taiwan University, Taipei, Taiwan.
Disabil Rehabil. 2023 Nov;45(22):3748-3754. doi: 10.1080/09638288.2022.2135770. Epub 2022 Oct 26.
We examined the unidimensionality and Rasch reliability of both Jenkinson's and MacIsaac's eight-item short versions of the Stroke Impact Scale (SF-SIS), a questionnaire for assessing overall health-related quality of life (HRQOL).
This study was a secondary data analysis in which 263 persons with stroke completed the SIS. The 263 persons, on average, had age of 60 years, mild stroke, and moderate disability of self-care. The unidimensionality of both versions was validated via testing of model fitting and principal component analysis (PCA) of residuals using the Rasch analysis to determine the Rasch reliability and measures.
The eight items in both SF-SIS versions met the criteria of infit and outfit MNSQ (<1.4 and >0.6), indicating good data-model fit. The PCA showed that no dominant factors existed in the residuals of the items. The person reliability of Jenkinson's and MacIsaac's SF-SIS versions was 0.80 and 0.79, respectively. The Rasch measures (i.e., person measure in logits) ranged from -1.06 to 1.87 in Jenkinson's SF-SIS and -0.82 to 1.88 in MacIsaac's version.
The unidimensionality of both versions was supported. The Rasch measures of both appear valid for representing overall HRQOL levels. Both versions also showed acceptable reliability for research purposes.Implications for rehabilitationThe unidimensionality was justified for both versions (Jenkinson's and MacIsaac's eight-item short-versions of Stroke Impact Scale).The Rasch scores of both versions appear valid for representing overall health-related quality of life.Both versions showed acceptable reliability for research purposes, but not sufficiently reliable for clinical use.
我们检验了詹金森（Jenkinson）和麦金太尔（MacIsaac）的卒中影响量表（SF - SIS）八条目简短版的单维度性和拉施克（Rasch）信度，该量表是用于评估与健康相关的总体生活质量（HRQOL）的问卷。
本研究为二次数据分析，263名卒中患者完成了卒中影响量表（SIS）。这263名患者平均年龄为60岁，患有轻度卒中，自理能力为中度残疾。通过模型拟合检验和使用拉施克分析对残差进行主成分分析（PCA）来验证两个版本的单维度性，以确定拉施克信度和测量指标。
两个SF - SIS版本中的八个条目均符合内拟合和外拟合MNSQ标准（<1.4和>0.6），表明数据与模型拟合良好。主成分分析表明，条目的残差中不存在主导因素。詹金森版和麦金太尔版SF - SIS的个人信度分别为0.80和0.79。在詹金森版SF - SIS中，拉施克测量指标（即对数单位的个人测量值）范围为 - 1.06至1.87，在麦金太尔版中为 - 0.82至1.88。
两个版本的单维度性均得到支持。两个版本的拉施克测量指标似乎都能有效代表总体HRQOL水平。两个版本在研究目的上也显示出可接受的信度。
对康复的启示
两个版本（詹金森和麦金太尔的卒中影响量表八条目简短版）的单维度性是合理的。
两个版本的拉施克分数似乎都能有效代表与健康相关的总体生活质量。
两个版本在研究目的上显示出可接受的信度，但在临床应用中可靠性不足。
