The dual presence of frailty and locomotive syndrome is associated with a greater decrease in the EQ-5D-5L index.

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ABSTRACTJapan’s aging society is facing an increase in the prevalence of frailty and locomotive syndrome (LS) among older adults. To evaluate the association of these age-related declines on health-related quality of life (QOL) in Japan, we investigated this relationship among Japanese middle-aged and older adults who underwent general checkups and examined whether LS or frailty has a stronger association with the Japanese version of EuroQol’s five-level EQ-5D (EQ-5D-5L) index. Participants were 231 middle-aged and older Japanese adults receiving routine health checkups. The study utilized the 25-item Geriatric Locomotive Function Scale, the Japanese version of the Cardiovascular Health Study, and the Japanese version of the EQ-5D-5L. Univariate and multivariate analyses were performed to examine how frailty and LS are related to the EQ-5D-5L index. Patients with both frailty (p = 0.003) and LS (p < 0.001) had a significantly lower EQ-5D-5L index. After adjusting for age, gender, and body mass index, LS was significantly associated with a decrease in the EQ-5D-5L index (p < 0.001), whereas frailty had no significant association with the EQ-5D-5L index (p = 0.052). Further analysis showed no significant decrease in the EQ-5D-5L index among those with frailty but no LS, and a significant decrease among those with frailty and LS. The results suggest that frailty and LS are associated with a decrease in the EQ-5D-5L index, but LS has a more pronounced effect. In evaluating frailty’s effects on health-related QOL, we determined the importance of separately assessing frailty both with and without LS, even within the same frailty group.