Association between caregivers' health‐related quality of life and care recipients' health outcomes.

Aims: This study aimed to investigate the relationship between family caregivers' health‐related quality of life and health outcomes in care recipients. Methods: A total of 160 female caregivers in Japan were initially assessed using self‐reported baseline questionnaires to determine physical and mental aspects of their health‐related quality of life. Based on these scores, they were divided into three groups: lower, middle, and higher quality of life. We followed up with the 133 participants (after excluding those that did not respond) 6 years later to assess the health of their care recipients; 36 caregivers continued to provide home care, while 97 reported that their care recipient had died or been admitted into institutionalized care. Results: Statistically, a higher risk for care recipients' health deterioration was strongly associated with the mental component score in the lower caregivers' quality of life group of than for the middle group, after adjusting for the care recipients' age, health status, and caregivers' age at baseline. There was no significant association between deterioration of health of care recipients and physical component scores of the caregivers. Conclusion: Caregivers' poor health‐related quality of life, particularly poor mental health, may be linked to the deterioration of care recipients' health. Summary statement: What is already known about this topic? Family caregivers reportedly have lower quality of life than noncaregivers.While factors associated with decreased quality of life of caregivers such as high caregiving burden and longer care duration are being identified, they remain difficult to prevent.Lower caregiver quality of life may negatively influence the care recipients. What this paper adds? Poor mental health in caregivers, calculated with health‐related quality of life scores, is associated with health deterioration of care recipients.Physical health in caregivers is not associated with health deterioration of care recipients. The implications of this paper: Support for improving the health‐related quality of life of caregivers is necessary, especially in relation to their mental health, from the viewpoint of maintaining the health status of care recipients. [ABSTRACT FROM AUTHOR]