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Japan has the highest proportion of older adults in the world. Aging is not only an immediate personal issue but also a salient factor in crucial public policies, such as pensions, health, and long-term care. The Great East Japan Earthquake, tsunami, and nuclear power plant disaster of March 2011 has highlighted current and emerging issues of a "super-aging" society, especially the need for community-based support systems.
Muramatsu et al. (Sat,) studied this question.
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