What determines the life satisfaction of the elderly? Comparative study of residential care home and community in Japan

Background: Increasing lifespan has forced elderly persons and researchers alike to look at life and aging in a new way: at adding life to years rather than years to life. With increasing lifestyle choices for the elderly, the present study was undertaken to determine and compare the factors associated with life satisfaction in elderly living in a residential care home and in the community in Japan. Methods: This was a cross-sectional, self-reported, questionnaire-based study. Elderly persons from the residential care home in Kyoto City (n = 261, mean age ± SD = 79.6 ± 6.6 years, male : female = 1 : 3.1) and from the town of Urausu, Hokkaido (n = 733, mean age ± SD = 74.8 ± 6.8 years, male : female = 1 : 1.3), participated in the study. This represented 95.3% and 89.5% of all eligible elderly ≥ 65 years in the home and town, respectively. Activities of daily living, higher functions, medical and social history, geriatric depression scale and quality of life were studied. Using multiple logistic regression models, factors associated with high satisfaction of life were identified. Results: In community-dwelling elderly, relationship with friends, as opposed to relationship with family for elderly in residential care home, were factors related to life satisfaction. Conclusions: This study demonstrates the relative importance of social factors versus medical and functional factors as determinants of life of elderly. We have also shown how these factors differ for elderly living in different environments. Understanding these different as well as common determinants of life satisfaction from a whole array of diverse ones allows us to make effective strategy to improve the quality of life of elderly living in different conditions.