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  • Title: Physical frailty and mortality risk in Japanese older adults.
    Author: Yuki A, Otsuka R, Tange C, Nishita Y, Tomida M, Ando F, Shimokata H.
    Journal: Geriatr Gerontol Int; 2018 Jul; 18(7):1085-1092. PubMed ID: 29608043.
    Abstract:
    AIM: The association between frailty and increased mortality risk is unknown. The present study assessed the longitudinal relationship between frailty and mortality risk in Japanese community-dwelling older adults. METHODS: Participants included 841 randomly chosen community-dwelling Japanese individuals, including 175 older adults aged 65-88 years with incomplete data at the baseline examination (July 2006-July 2008). Participants were followed from baseline to 31 December 2015 (mean 7.9 years). Frailty was diagnosed according to frailty criteria, including unintentional weight loss (shrinking), exhaustion, low activity, low grip strength and low gait speed. Information on deaths was obtained from a population dynamics survey. The relationship between frailty and mortality was assessed using Kaplan-Meier survival curves and Cox proportional hazards regression. The Cox proportional hazards model was used to control for potential confounders, including age at baseline, body fat, education, the Mini-Mental State Examination score, the Center for Epidemiologic Studies Depression Scale score, total physical activity, total caloric intake, alcohol intake, current smoking, household income and the number of current diseases. RESULTS: The fully adjusted hazard ratio for all-cause mortality in the frailty group was 2.63 (95% confidence interval, 1.28-5.39; P for trend <0.01). The age- and sex-adjusted hazard ratio for mortality of cancer in the frailty group was 3.33 (95% confidence interval, 1.15-9.62; P for trend <0.05). CONCLUSION: Complications of frailty, which include shrinking, exhaustion, low activity, weakness, and slowness, appear to be significant risks for mortality in Japanese older adults. Geriatr Gerontol Int 2018; 18: 1085-1092.
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