. 2016 Mar 15;2016:7474192. doi: 10.1155/2016/7474192

Table 2.

25(OH)D levels for prenatal 25(OH)D and cord blood 25(OH)D. Values are in ng/mL.

	N	Prenatal		Cord
	N	Mean (SD)	Range	Mean (SD)	Range
Baby is Black	175	20.1 (10.3)	2.5–49.9	9.1 (6.6)	2.5–47.5
Baby is White	66	32.9 (10.8)	13.1–64.9	15.6 (7.2)	2.5–28.7

Baby is firstborn	45	27.7 (11.6)	2.5–51.3	13.2 (6.8)	2.5–28.2
Baby is not firstborn	196	22.7 (11.8)	2.5–64.9	10.4 (7.4)	2.5–47.5

Winter birth	44	24.1 (12.2)^∗	2.5–51.3	10.5 (7.4)^∗	2.5–28.2
Nonwinter birth	197	23.5^∗ (11.8)	2.5–64.9	11.0^∗ (7.4)	2.5–47.5

Maternal prenatal 25(OH)D <40 ng/mL	218	21.3 (9.6)	2.5–39.5	9.8 (6.5)	2.5–47.5
Maternal prenatal 25(OH)D ≥40 ng/mL	23	46.1 (6.0)	40.3–64.9	21.9 (6.2)	2.5–28.7

Maternal prenatal 25(OH)D <20 ng/mL	95	12.2 (5.2)	2.5–19.8	6.0 (6.2)	2.5–47.5
Maternal prenatal 25(OH)D ≥20 ng/mL	146	31.0 (8.7)	20.1–64.9	14.1 (6.2)	2.5–28.7

Maternal prenatal 25(OH)D <15 ng/mL	60	9.2 (4.1)	2.5–14.8	5.7 (7.5)	2.5–47.5
Maternal prenatal 25(OH)D ≥15 ng/mL	181	28.4 (9.5)	15.2–64.9	12.6 (6.5)	2.5–28.7

Maternal BMI at 1st prenatal visit <30 kg/m²	126	26.8 (12.7)	2.5–64.9	12.1 (7.5)	2.5–35.9
Maternal BMI at 1st prenatal visit ≥30 kg/m²	109	20.0 (9.8)	2.5–50.2	9.9 (7.0)	2.5–47.5

Maternal BMI at 1st prenatal visit <35 kg/m²	170	25.8 (12.2)	2.5–64.9	11.8 (7.3)	2.5–35.9
Maternal BMI at 1st prenatal visit ≥35 kg/m²	65	18.1 (9.1)	2.5–42.2	9.1 (7.3)	2.5–47.5

Preterm birth (<37 weeks)	20	23.1 (14.6)^∗	2.5–51.3	13.8 (9.5)^∗	2.5–35.9
Full term birth (≥37 weeks)	218	23.5 (11.6)^∗	2.5–64.9	10.6 (7.1)^∗	2.5–47.5

Low birth weight (≤2500 g)	17	17.2 (10.5)	2.5–38.9	10.2 (8.1)^∗	2.5–35.9
Not low birth weight (>2500 g)	207	24.0 (12.0)	2.5–64.9	10.9 (7.4)^∗	2.5–47.5

Baby born vaginally	153	24.4 (12.8)^∗	2.5–64.9	11.3 (7.4)^∗	2.5–35.9
Baby born via c-section	88	22.3 (10.0)^∗	2.5–51.3	10.3 (7.3)^∗	2.5–47.5

Mother is atopic	144	22.9 (10.8)^∗	2.5–58.1	11.1 (7.3)^∗	2.5–47.5
Mother is not atopic	90	24.6 (13.6)^∗	2.5–64.9	10.5 (7.6)^∗	2.5–28.7

^∗Indicates no statistically significant difference in 25(OH)D levels between those with and without that characteristic at that time point (p ≥ 0.05, Wilcoxon Rank Sum test).