Department of Rehabilitation Sciences,Faculty of Health and Social Sciences,Hong Kong Polytechnic University,Hung Hom,Hong Kong.
Department of Public Health,National Cheng Kung University Hospital,College of Medicine,National Cheng Kung University,Tainan,Taiwan.
Int Psychogeriatr. 2017 Nov;29(11):1841-1848. doi: 10.1017/S1041610217001417. Epub 2017 Aug 1.
The Zarit Burden Interview (ZBI) is a commonly used self-report to assess caregiver burden. A 12-item short form of the ZBI has been developed; however, its measurement invariance has not been examined across some different demographics. It is unclear whether different genders and educational levels of a population interpret the ZBI items similarly. Therefore, this study aimed to examine the measurement invariance of the 12-item ZBI across gender and educational levels in a Taiwanese sample.
Caregivers who had a family member with dementia (n = 270) completed the ZBI through telephone interviews. Three confirmatory factor analysis (CFA) models were conducted: Model 1 was the configural model, Model 2 constrained all factor loadings, Model 3 constrained all factor loadings and item intercepts. Multiple group CFAs and the differential item functioning (DIF) contrast under Rasch analyses were used to detect measurement invariance across males (n = 100) and females (n = 170) and across educational levels of junior high schools and below (n = 86) and senior high schools and above (n = 183).
The fit index differences between models supported the measurement invariance across gender and across educational levels (∆ comparative fit index (CFI) = -0.010 and 0.003; ∆ root mean square error of approximation (RMSEA) = -0.006 to 0.004). No substantial DIF contrast was found across gender and educational levels (value = -0.36 to 0.29).
The ZBI is appropriate for combined use and for comparisons in caregivers across gender and different educational levels in Taiwan.
Zarit 负担访谈（ZBI）是一种常用的自评工具，用于评估照顾者的负担。已经开发出 ZBI 的 12 项简短形式，但尚未在一些不同的人口统计学特征中检验其测量不变性。目前尚不清楚不同性别和教育水平的人群是否以相似的方式解释 ZBI 项目。因此，本研究旨在检验 12 项 ZBI 在台湾样本中跨性别和教育水平的测量不变性。
有家庭成员患有痴呆症的照顾者（n = 270）通过电话访谈完成 ZBI。进行了三个验证性因素分析（CFA）模型：模型 1 为配置模型，模型 2 约束所有因子负荷，模型 3 约束所有因子负荷和项目截距。多组 CFA 和 Rasch 分析下的差异项目功能（DIF）对比用于检测男性（n = 100）和女性（n = 170）以及初中及以下（n = 86）和高中及以上（n = 183）教育水平之间的测量不变性。
模型间的拟合指数差异支持跨性别和跨教育水平的测量不变性（∆比较拟合指数（CFI）= -0.010 和 0.003；∆近似均方根误差（RMSEA）= -0.006 至 0.004）。未发现性别和教育水平之间存在实质性的 DIF 对比（值= -0.36 至 0.29）。
ZBI 适合在台湾跨性别和不同教育水平的照顾者中联合使用和进行比较。
