TY - JOUR PY - 2023// TI - Does disaster-related relocation impact mental health via changes in group participation among older adults? Causal mediation analysis of a pre-post disaster study of the 2016 Kumamoto earthquake JO - BMC public health A1 - Matsuoka, Yoko A1 - Haseda, Maho A1 - Kanamori, Mariko A1 - Sato, Koryu A1 - Amemiya, Airi A1 - Ojima, Toshiyuki A1 - Takagi, Daisuke A1 - Hanazato, Masamichi A1 - Kondo, Naoki SP - e1982 EP - e1982 VL - 23 IS - 1 N2 - BACKGROUND: Disaster-related relocation is associated with depression and post-traumatic stress disorder, especially in older adults. Disaster-related relocation often deprives survivors of opportunities for social group participation, potentially deteriorating their mental health. On the contrary, the relocation could also be an opportunity for optimizing social relationships, ending/reducing unwanted participation. This study examined the potential mediation effects of changing participation for the link of disaster-related relocation to mental health.

METHODS: We analyzed a pre-post disaster dataset of functionally independent older adults from the Japan Gerontological Evaluation Study. Following the 2013 survey, a follow-up survey was conducted seven months after the 2016 Kumamoto earthquake (n = 828).

RESULTS: The causal mediation analyses indicated that compared to no relocation, the relative risk for experiencing major depressive episodes among those relocating to temporary housing was 3.79 [95% confidence interval: 1.70-6.64] (natural direct effect). By contrast, the relative risk for those renewing (either ceased or started) group participation was 0.60 [95% CI: 0.34-0.94] (natural indirect effect).

CONCLUSIONS: Optimization of social ties according to a renewal of group participation status might have protected older adults in temporary housing against depression.

Language: en

LA - en SN - 1471-2458 UR - http://dx.doi.org/10.1186/s12889-023-16877-0 ID - ref1 ER -