Validity and reliability of the Brazilian version of the Caregiver Reaction Assessment

ABSTRACT Objective: To analyze the validity based on the internal structure and reliability of the Brazilian version of the Caregiver Reaction Assessment (CRA) applied to informal caregivers of dependent elderly. Method: A methodological study with 120 informal caregivers of the elderly. Validity based on the internal structure evaluated by exploratory factorial analysis, with extraction of main factorial axes, varimax orthogonal rotation and retention of factors by parallel analysis. Reliability assessed by Cronbach’s alpha. Results: The instrument revealed a factorial structure different from the original version: three factors were identified, equivalent to subscales, self-esteem, daily activities and family support, with explained variance of 42%. The values of the Cronbach alpha for the items belonging to each subscale were, respectively: 0.71, 0.81 and 0.83. Conclusion: The Brazilian version of CRA presents good evidence of validity based on internal structure and is reliable, and can be used to assess the overload of informal caregivers of dependent elderly.

摘要 目的：分析针对依存性老年非正式照料者施测的照料者反应量表（Caregiver Reaction Assessment，CRA）巴西版的内部结构效度与信度。方法：本研究为方法学研究，共纳入120名老年非正式照料者。内部结构效度采用探索性因子分析评估，通过主因子轴提取、方差极大正交旋转法，并借助平行分析保留因子；信度采用克朗巴赫α系数（Cronbach’s alpha）进行检验。结果：该量表的因子结构与原版存在差异，共提取出3个因子，对应自尊、日常活动与家庭支持3个分量表，累计解释方差为42%。各分量表的克朗巴赫α系数分别为0.71、0.81和0.83。结论：CRA巴西版具备良好的内部结构效度与信度，可用于评估依存性老年非正式照料者的照料负担。