The accuracy of body mass index and calf circumference values when assessing sarcopenia in a multi-ethnic cohort of middle-aged and older adults: West China health and aging trend study results.

These data suggest that BMI and CC can both serve as accurate predictors of sarcopenic incidence in a multi-ethnic population ≥50 years of age. The specificity values for BMI were relatively low in both males and females, however, underscoring the relative advantages of measuring CC when assessing individual sarcopenia risk.