Longitudinal Association Between Subjective Fatigue and Future Falls in Community-Dwelling Older Adults: The Locomotive Syndrome and Health Outcomes in the Aizu Cohort Study (LOHAS)

Abstract

Objective:We examined the longitudinal association between the severity of fatigue and falls in community-dwelling older adults. Method: Subjective fatigue was assessed using the Short Form 36 Health Survey (SF-36) Vitality subscale and classified into four categories by quartile (mildest, mild, moderate, severe). The main outcome was the incidence of any falls during the 2-year follow-up period. Results: Of the 751 participants, 236 (31.4%) experienced falls during the 2-year period. In multivariable logistic regression analysis with adjustment for possible confounding factors, the adjusted odds ratios (and 95% confidence intervals) for mild, moderate, and severe categories (vs. mildest category) of 1.60 (0.94-2.75), 1.87 (1.12-3.11), and 2.15 (1.23-3.76), respectively (p for trend = .007). Discussion: Our results suggest that the severity of fatigue is associated with the risk of subsequent falls for community-dwelling older adults even after adjustment for possible confounding factors.