Fig. 2

Estimated odds ratios of frailty: comparison of the low and high body mass index (BMI) groups with the reference group (intermediate BMI) in 7,783 participants eligible for frailty analysis. BMI, body mass index. The values are odds ratios (95% CIs, p values). *Adjusted for age, sex, institution, ≤ 9 years of formal education, hypertension, diabetes mellitus, history of cerebrovascular disease, and history of heart disease.