Journal of Epidemiology
Online ISSN : 1349-9092
Print ISSN : 0917-5040
ISSN-L : 0917-5040
Increase in body weight following residential displacement. Five year follow-up after the 2011 Great East Japan Earthquake and Tsunami.
Shuko TakahashiYuki YonekuraKozo TannoHaruki ShimodaKiyomi SakataAkira OgawaSeiichiro Kobayashi
ジャーナル オープンアクセス 早期公開

論文ID: JE20190333


Background: Previous studies have linked residential displacement as a result of the 2011 East Japan Earthquake to increases in body weight. However, no study has examined longer-term trajectories of body weight among displaced survivors. We compared body weight change between survivors relocated to temporary housing (TH) group versus other types of accommodation for up to 5 years after the Great East Japan Earthquake.

Methods: Longitudinal follow-up was conducted from 2011 to 2015 in a cohort of 9,909 residents of 42,831. We compared trends in body weight in the TH group (n =3,169) and the non-TH group (n =6,740) using a mixed linear regression model stratified by sex (mean age, 61.0 years old, male, 38.9%).

Results: In age adjusted analysis, the body weight in the 2011 survey was not significantly different between two groups for either sex. In men, the TH group significantly increased body weight compared to the non-TH group since 2012. In women, body weight sharply increased in the TH group while body weight did not change in the non-TH group during survey time points. The interaction of living conditions and survey years was statistically significant in both sexes (men; F-value, 6.958; P value <0.001: women; F-value, 19.127; P value <0.001).

Conclusion: Survivors relocated to temporary housing had an increased risk of weight gain. The weight gain in this group is a potential risk factor for metabolic syndrome in the post-disaster period.

© 2020 Shuko Takahashi et al. This is an open access article distributed under the terms of Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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