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. 2013 Jan 18;2(1):e2. doi: 10.2196/ijmr.2485

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©Hiroaki Sugiura, Manabu Akahane, Yasushi Ohkusa, Nobuhiko Okabe, Tomomi Sano, Noriko Jojima, Harumi Bando, Tomoaki Imamura. Originally published in the Interactive Journal of Medical Research (http://www.i-jmr.org/), 18.01.2013.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in the Interactive Journal of Medical Research, is properly cited. The complete bibliographic information, a link to the original publication on http://www.i-jmr.org/, as well as this copyright and license information must be included.

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Prevalence of insomnia in Osaka. The prevalence of insomnia among adults increased after the earthquake. The prevalence of insomnia among minors remained approximately the same as that before the earthquake.