Fig. 4From: Frailty, nutrition-related parameters, and mortality across the adult age spectrumAssociation between nutritional index and mortality across levels of frailty. FI, frailty index; NI, nutritional index. All analyses were adjusted for age, sex, race, educational level, marital status, employment status, smoking, and study cohort except for energy and energy per weight which were not adjusted for energy intake. *p value < 0.05Back to article page