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Aim: This study aimed to develop a Japanese version of the Caregiving Interface Work Scale (J‐CIWS) for use with employed Japanese family caregivers. Methods: Permission was obtained from the developer of the original CIWS. The CIWS contains 20 items: 10 measuring care interface work (CIW) and 10 measuring work interface care (WIC). Responses are measured on a five‐point Likert scale. The J‐CIWS was developed through forward‐ and back‐translation and cognitive interviews of employed family caregivers. An internet survey was conducted with 116 employed family caregivers, and 78 participants answered a retest. Questionnaire items included the J‐CIWS and demographic factors. Factor analysis was conducted to determine the J‐CIWS factor structure. Validity was assessed based on known‐groups, convergent and discriminant validity. Internal consistency was examined by calculating Cronbach's α. Test–retest reliability was examined by calculating the Pearson's correlation coefficient. Results: The mean participant age was 50.3 years; 74 (63.8%) were male. The average weekly working and caregiving hours were 41.6 and 12.1 h, respectively. Confirmatory factor analysis supported the original two‐factor model. High internal consistency (Cronbach's alpha >0.90) and sufficient test–retest reliability (weighted κ score >0.45) were demonstrated for both subscales. Convergent and discriminant validity were acceptable for the two subscales (CIW and WIC). Conclusions: This study confirmed the usefulness of the CIWS within a Japanese context. The J‐CIWS may be useful for evaluating the extent of the conflict between work and care among employed family caregivers. Geriatr Gerontol Int 2021; 21: 254–261. [ABSTRACT FROM AUTHOR]

Aim: The present study aimed to examine the associations among behavioral and psychological symptoms of dementia (BPSD) of persons with dementia (PWD), care burden and family‐to‐work conflict (FWC) of employed family caregivers. Method: A cross‐sectional study was carried out with employed adult daughter or son (or in‐law) caregivers for PWD from two rural cities in Japan. FWC, care burden and the degree of BPSD were evaluated by the Survey Work‐Home Interaction‐NijmeGen, Zarit Burden Scale‐Short Version and Dementia Behavior Disturbance Scale, respectively. Of the 200 questionnaires distributed, 130 were returned. A total of 53 respondents were not employed, and seven questionnaires had missing data for demographic variables, Survey Work‐Home Interaction‐NijmeGen, Zarit Burden Scale‐Short Version or Dementia Behavior Disturbance Scale. Thus, complete data from 70 respondents were analyzed through structural equation modeling. Results: The mean age of employed family caregivers was 56 years, and 34 (48.5%) were men. The mean age of PWD was 84 years, and there were 68 (68.6%) men. The path model with a good fit was shown (root mean square error of approximation 0.136, comparative fit index 0.960 and goodness of fit index 0.965). The path model showed that BPSD affected FWC, and that the association was partially mediated by care burden. Conclusions: The results show that a decrease in not only care burden, but also BPSD, of PWD is important for employed family caregivers to reduce their FWC and maintain their work–life balance. Geriatr Gerontol Int 2019; 19: 51–55. [ABSTRACT FROM AUTHOR]