Fig. 4

The time-dependent c-index curve with 1000 rounds of bootstrap for comparison of model stability between BRI and BMI for predicting all-cause mortality. Notes: The two models were adjusted for age, sex, race, marital status, education, poverty-to-income ratio, drinking, smoking, total energy intake, weekly physical activity level, hyperlipidemia, DM, arthritis, CVD, thyroid problems, liver problem, hypertension, CKD, and cancer. DM, diabetes; CVD, cardiovascular disease; CKD, chronic kidney disease; BRI, body roundness index; BMI, body mass index