Table 1.

Baseline Characteristics of Study Participants by Ferritin Level

	Low Ferritin (≤26 ng/mL)		Higher Ferritin (>26 ng/mL)
	Iron (n = 51)	No Iron (n = 50)	Iron (n = 60)	No Iron (n = 54)
Women, No. (%)	33 (64.7)	31 (62.0)	38 (63.3)	34 (63.0)
Age ≥60 y, No. (%)	12 (23.5)	11 (22.0)	17 (28.3)	12 (22.2)
Age, mean (SD), y	47.5 (15.5)	45.9 (15.7)	49.3 (14.6)	48.1 (14.6)
Weight, mean (SD), kg	75.9 (16.4)	76.8 (15.8)	81.5 (16.4)	77.9 (16.2)
Hemoglobin, mean (SD), g/dL	13.2 (1.0)	13.7 (1.3)	14.1 (1.0)	14.3 (1.2)
Ferritin, mean (SD), ng/mL	14.9 (5.8)	15.2 (6.0)	54.0 (24.3)	58.9 (32.9)
sTfR, mean (SD), mg/L	4.0 (1.33)	3.9 (1.19)	3.1 (0.65)	3.1 (0.62)
Estimated blood volume, mean (SD), L	4.59 (0.8)	4.66 (0.91)	4.79 (0.84)	4.64 (0.84)

Abbreviation: sTfR, soluble transferrin receptor.