Association between body roundness index and frailty among middle aged and older adults in China.

Similarly, the nominally significant risk observed in the 50–59 age group might reflect peak career and family responsibilities, midlife weight gain, and higher prevalence of metabolic syndrome.

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While the odds ratio for frailty risk decreased from the unadjusted Model 1 to the fully adjusted Model 3, the association between BRI and frailty remained highly significant (OR = 1.23).

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