. 2020 Jul 2;112(3):576–585. doi: 10.1093/ajcn/nqaa155

TABLE 2.

Maternal and neonatal iron status indicators at delivery¹

	Singletons
	Peru	Rochester	Multiples
Maternal indicators, n	43	20	5
Hb, g/dL	11.92 ± 1.77	11.15 ± 1.18	11.64 ± 2.30
Anemic, %	30	37	20
SF, μg/L	32.49 [23.37, 45.17]	19.47 [12.19, 23.54]	27.50 [7.50, 100.93]
<20 μg/L	33	40	67
<12 μg/L	17	22	33
sTfR, mg/L	3.66 [2.98, 4.49]	6.26 [5.01, 7.83]	5.53 [0.61, 49.66]
TBI, mg/kg	3.39 ± 3.72	2.30 ± 3.03	2.89 ± 5.98
Hepcidin, ng/mL	—	36.92 ± 58.20 [2.5, 207.1]	9.59 ± 12.89 [1.2, 24.4]
EPO, IU/L	—	32.61 ± 23.00 [9.4, 109.5]	44.7 ± 38.24 [10, 185.7]
Folate, nmol/L	12.42^b [10.30, 14.97]	37.40^a [30.20, 46.32]	20.32^ab [8.83, 46.81]
Deficient, %	11	0	0
Vitamin B-12, pmol/L	178.52 ± 81.57^a	262.21 ± 123.03^b	343 ± 101.06^b
Deficient, %	37	21	0
Neonatal indicators, n	42	20	11
Hb, g/dL	15.71 ± 1.89^a	13.36 ± 3.05^b	15.37 ± 1.13^a
Anemic, %	7^a	37^b	0^a
SF, μg/L	167.84 ± 77.68	202.01 ± 115.97	148.46 ± 52.83
sTfR, mg/L	6.23 ± 1.79	8.35 ± 2.15	7.68 ± 2.55
TBI, mg/kg	10.18 ± 2.49	9.43 ± 2.80	9.10 ± 2.61
Hepcidin, ng/mL	—	62.08 [8.5, 95.94]	16.13 [9.58, 27.16]
EPO, IU/L	—	28.13 [17.07, 46.35]	14.92 [10.42, 21.37]
Folate, nmol/L	24.36 ± 8.50^b	69.44 ± 26.61^a	85.59 ± 23.54^a
Deficient, %	0	0	0
Vitamin B-12, pmol/L	140.91^b [110.72, 179.33]	510.88^a [348.05, 749.89]	408.58^a [298.94, 558.42]
Deficient, %	50^b	6^a	0^a

Values are means ± SDs or geometric means [95% CIs] unless otherwise indicated. Data were analyzed by ANOVA or chi-square test to assess indicator differences between cohorts measured with the same assay. Different superscript letters indicate significant differences between cohorts. EPO, erythropoietin; Hb, hemoglobin; SF, serum ferritin; sTfR, soluble transferrin receptor; TBI, total body iron.