Röschel Anna, Wagner Christina, Dür Mona
Department of Health Sciences, IMC University of Applied Sciences Krems, Krems, Austria.
Duervation, Krems, Austria.
PLoS One. 2021 Dec 23;16(12):e0261815. doi: 10.1371/journal.pone.0261815. eCollection 2021.
Informal caregivers often experience a restriction in occupational balance. The self-reported questionnaire on Occupational Balance in Informal Caregivers (OBI-Care) is a measurement instrument to assess occupational balance in informal caregivers. Measurement properties of the German version of the OBI-Care had previously been assessed in parents of preterm infants exclusively. Thus, the aim of this study was to examine the measurement properties of the questionnaire in a mixed population of informal caregivers.
A psychometric study was conducted, applying a multicenter cross-sectional design. Measurement properties (construct validity, internal consistency, and interpretability) of each subscale of the German version of the OBI-Care were examined. Construct validity was explored by assessing dimensionality, item fit and overall fit to the Rasch model, and threshold ordering. Internal consistency was examined with inter-item correlations, item-total correlations, Cronbach's alpha, and person separation index. Interpretability was assessed by inspecting floor and ceiling effects.
A total of 196 informal caregivers, 171 (87.2%) female and 25 (12.8%) male participated in this study. Mean age of participants was 52.27 (±12.6) years. Subscale 1 was multidimensional, subscale 2 and subscale 3 were unidimensional. All items demonstrated item fit and overall fit to the Rasch model and displayed ordered thresholds. Cronbach's Alpha and person separation index values were excellent for each subscale. There was no evidence of ceiling or floor effects.
We identified satisfying construct validity, internal consistency, and interpretability. Thus, the findings of this study support the application of the German version of the OBI-Care to assess occupational balance in informal caregivers.
非正式照料者常常经历职业平衡受限的情况。非正式照料者职业平衡自我报告问卷（OBI-Care）是一种用于评估非正式照料者职业平衡的测量工具。此前仅在早产儿的父母中评估了OBI-Care德文版的测量特性。因此，本研究的目的是在非正式照料者的混合群体中检验该问卷的测量特性。
进行了一项心理测量学研究，采用多中心横断面设计。检验了OBI-Care德文版各子量表的测量特性（结构效度、内部一致性和可解释性）。通过评估维度、项目拟合度和对拉施模型的整体拟合度以及阈值排序来探索结构效度。用项目间相关性、项目-总分相关性、克朗巴哈α系数和人员分离指数来检验内部一致性。通过检查地板效应和天花板效应来评估可解释性。
共有196名非正式照料者参与了本研究，其中171名（87.2%）为女性，25名（12.8%）为男性。参与者的平均年龄为52.27（±12.6）岁。子量表1是多维的，子量表2和子量表3是单维的。所有项目均显示出项目拟合度以及对拉施模型的整体拟合度，并呈现出有序的阈值。每个子量表的克朗巴哈α系数和人员分离指数值都很出色。没有证据表明存在天花板效应或地板效应。
我们确定了令人满意的结构效度、内部一致性和可解释性。因此，本研究结果支持应用OBI-Care德文版来评估非正式照料者的职业平衡。
