Table 3.

Baseline iron metabolism parameters according to the composite endpoint of ICU admission/in-hospital death

	Non-ICU admitted/Discharged alive n = 261	ICU admitted/ Non-survivors n = 101	p
Serum iron, μg/dL	35 (23–58)	26 (17–37)	<0.001
Ferritin, ng/mL	402 (185–790)	772 (313–1375)	<0.001
FIR	10 (5–24)	27 (11–56)	<0.001
TIBC, μg/dL	213 (184–250)	195 (156–219)	<0.001
Transferrin, mg/dL	130 (104–157)	113 (82–133)	<0.001
Transferrin saturation, %	16 (10–29)	13 (8–20)	0.008
FTR	3 (1–6)	8 (2–14)	<0.001

FIR, Ferritin to Iron Ratio; FTR, Ferritin-to-Transferrin Ratio; ICU, intensive care unit; TIBC, total iron binding capacity.