Figure 2.

Multivariable-adjusted relative risk for incident IADL disability, by quartiles and per SD increment of D₃Cr muscle mass/wgt (A, C) or DXA appendicular lean mass (kg)/height (m²) (B, D). Multivariable models adjusted for age, race, clinical center, alcohol use, smoking status, comorbidities, physical activity, percent fat, exhaustion, cognitive function, self-reported health status, and weight change. D₃Cr muscle mass/wgt models also adjusted for height (A, B). Models further adjusted for strength and physical performance covariates also include chair stands, gait speed, and grip strength (C, D).