Kumamoto Keigo, Arai Yumiko
Research Unit for Nursing Caring Sciences and Psychology, National Institute for Longevity Sciences, Obu-shi, Aichi, Japan.
Psychiatry Clin Neurosci. 2004 Dec;58(6):606-10. doi: 10.1111/j.1440-1819.2004.01310.x.
The eight-item short version of the Japanese version of the Zarit Burden Interview (J-ZBI_8) has been confirmed for reliability and validity, and its two subscales (personal strain and role strain) are based on the factor structure of the ZBI. It has been demonstrated that these subscales have good reliability. The aim of the present study was to confirm their construct validity. A total of 51 impaired elderly who had been receiving regular nurses' visits in Kyoto Prefecture, Japan and their family primary caregivers, participated in the present study. Each caregiver was asked to complete a questionnaire which included the J-ZBI_8, the hours spent in caregiving, and the physical and cognitive disability of the impaired elderly. A principal component analysis identified the following two principal components of these variables: 'Activities of Daily Living deficits' and 'behavioral disturbances'. Consequently, Barthel Index (BI) and Troublesome Behavior Scale (TBS) were selected as the representative variable, respectively, for each component. We subsequently calculated the Spearman's rank correlations among the subscales of J-ZBI_8, BI and TBS. Personal strain was found to be correlated with TBS (rho = 0.48, P < 0.01), while role strain was correlated with the BI (rho = -0.29, P = 0.04). The correlation between personal strain and BI was not significant, nor was the correlation between role strain and TBS. These findings indicate that the personal strain and role strain measured by J-ZBI_8 correspond to the personal strain and role strain of the ZBI originally described by Whitlatch et al. Therefore, the construct validity of the J-ZBI_8 subscales is confirmed.
日本版 Zarit 负担访谈量表（J-ZBI_8）的八项简短版本已被证实具有信度和效度，其两个子量表（个人压力和角色压力）基于 Zarit 负担访谈量表（ZBI）的因子结构。研究表明，这些子量表具有良好的信度。本研究的目的是确认它们的结构效度。共有 51 名在日本京都府接受定期访视护士护理的失能老年人及其家庭主要照料者参与了本研究。每位照料者被要求完成一份问卷，其中包括 J-ZBI_8、照料所花费的时间，以及失能老年人的身体和认知残疾情况。主成分分析确定了这些变量的以下两个主成分：“日常生活活动缺陷”和“行为障碍”。因此，分别为每个成分选择巴氏指数（BI）和问题行为量表（TBS）作为代表性变量。随后，我们计算了 J-ZBI_8 子量表、BI 和 TBS 之间的斯皮尔曼等级相关性。发现个人压力与 TBS 相关（rho = ０.48，P < 0.01），而角色压力与 BI 相关（rho = -0.29，P = 0.04）。个人压力与 BI 之间的相关性不显著，角色压力与 TBS 之间的相关性也不显著。这些发现表明，J-ZBI_8 测量的个人压力和角色压力与 Whitlatch 等人最初描述的 ZBI 的个人压力和角色压力相对应。因此，J-ZBI_8 子量表的结构效度得到了确认。
