Journal of Epidemiology
Online ISSN : 1349-9092
Print ISSN : 0917-5040
ISSN-L : 0917-5040
Frequencies and Circumstances of Falls in the National Institute for Longevity Sciences, Longitudinal Study of Aging (NILS-LSA)
Naoakira NiinoShigeki TsuzukuFujiko AndoHiroshi Shimokata
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2000 年 10 巻 1sup 号 p. 90-94

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Frequencies and circumstances of falls were assessed among 1030 middle-aged and elderly people who participated in the NILS-LSA (National Institute for Longevity Sciences, Longitudinal Study of Aging) from November, 1997 to March, 1999 and responded to the questionnaires. The variables analyzed in the present study were demography and history of falls in the past one year. Circumstances of falls, e.g. time, location, activities associated with falls, cause of falls and degree of injury due to falls were asked when the subjects experienced a fall. Fear of falling was also investigated in all subjects. The prevalence of falls was 12.9% in the middle-aged group (40-59yr.) and 16.5% in the elderly group (60-79yr.). The distribution of time, location, activity associated with falls, cause and injury due to falls corresponded with previous fall studies among community-dwelling elderly people. The incidence of falls was extremely high during the daytime and outdoors. Falls occurred most frequently while walking. The majority of falls were due to extrinsic factors. About 40% of all falls caused no injury. As to the fear of falling, about 30% of the middle-aged subjects and about 60% of the elderly subjects reported that they were fearful. Our results suggested that fall accidents are not rare, even in middle-aged people. J Epidemiol, 2000 ; 10 : S90-S94.

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