Fig. 3: Associations of specific ARFIs and the number of key ARFIs with mortality (N = 12618).

ARFI age-related functional impairment, PY person-year, HR hazard ratio, CI confidence interval, ADL activities of daily living. Error bars indicate two-sided 95% confidence interval. Bold fonts indicate statistical significance after Bonferroni correction. All Cox proportional hazards models were adjusted for age, sex, education, married status, Hukou region, living areas, family income, smoking status, drinking status, BMI, history of stroke, cancer, hypertension, diabetes, and heart diseases. The models for the specific ARFIs with mortality were additionally adjusted for the presence of other ARFIs.