Hagiya, Hideharu Osaka University
Koyama, Toshihiro Okayama University
Tatebe, Yasuhisa Okayama University
Funahashi, Tomoko Okayama University
Shinomiya, Kazuaki Tokushima Bunri University
Kitamura, Yoshihisa Okayama University
Hinotsu, Shiro Sapporo Medical University
Sendo, Toshiaki Okayama University
Rakugi, Hiromi Osaka University
Kano, Mitsunobu R Okayama University|University of Tokyo
Objectives Fall-related mortality among older adults is a major public health issue, especially for ageing societies. This study aimed to investigate current trends in fall-related mortality in Japan using nationwide population-based data covering 1997–2016.
Design We analysed fall-related deaths among older persons aged ≥65 years using the data provided by the Japanese Ministry of Health, Labour and Welfare.
Results The crude and age-standardised mortality rates were calculated per 100 000 persons by stratifying by age (65–74, 75–84 and ≥85 years) and sex. To identify trend changes, a joinpoint regression model was applied by estimating change points and annual percentage change (APC). The total number of fall-related deaths in Japan increased from 5872 in 1997 to 8030 in 2016, of which 78.8% involved persons aged ≥65 years. The younger population (65–74 years) showed continuous and faster-decreasing trends for both men and women. Average APC among men aged ≥75 years did not decrease. Among middle-aged and older women (75–84 and ≥85 years) decreasing trends were observed. Furthermore, the age-adjusted mortality rate of men was approximately twice that of women, and it showed a faster decrease for women.
Conclusions Although Japanese healthcare has shown improvement in preventing fall-related deaths over the last two decades, the crude mortality for those aged over 85 years remains high, indicating difficulty in reducing fall-related deaths in the super-aged population. Further investigations to uncover causal factors for falls in older populations are required.
BMJ Publishing Group
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