Table 1.
Comparison of maternal and infant characteristics of women classified as 25(OH)D sufficient (≥100 nmoles/L) or deficient (<100 nmoles/L) prior to delivery.
| Maternal 25(OHD <100 nmoles/L | Maternal 25(OH)D ≥100 nmoles/L | Total | p-value* | |
|---|---|---|---|---|
| N (%) | N (%) | N (%) | ||
| Ethnicity | 0.04 | |||
| African American | 5 (11.6) | 6 (13.9) | 11 (25.6) | |
| Hispanic | 6 (13.9) | 11 (25.6) | 17 (39.5) | |
| Caucasian | 1 (2.3) | 13 (20.2) | 14 (32.5) | |
| American Indian | 1 (2.3) | 0 (0.0) | 1 (2.3) | |
| Insurance | 0.10 | |||
| Private | 2 (4.7) | 13 (30.2) | 15 (34.9) | |
| Medicaid | 7 (16.3) | 7 (16.3) | 14 (32.6) | |
| Self-Pay | 4 (9.3) | 10 (23.3) | 14 (32.6) | |
| Marital Status | 0.76 | |||
| Single | 4 (9.3) | 5 (11.6) | 9 (20.9) | |
| Married | 6 (13.9) | 18 (41.9) | 24 (55.8) | |
| Cohabitating | 3 (7.0) | 7 (16.3) | 10 (23.3) | |
| Mean ± SD | Mean ± SD | Mean ± SD | ||
| Maternal age (years) | 36.9 ± 4.2 | 28.9 ± 4.2 | 28.3 ± 4.3 | 0.31 |
| Maternal BMI | 30.3 ± 8.2 | 28.7 ± 8.1 | 29.2 ± 8.0 | 0.56 |
| Maternal 25(OH)D baseline (ng/mL) | 58.4 ± 22.7 | 71.9 ± 23.7 | 67.9 ± 23.9 | 0.10 |
| Maternal 25(OH)D V6/7 (ng/mL) | 60.9 ± 26.2 | 140.5 ± 31.2 | 116.6 ± 47.2 | |
| Infant gestational age (weeks) | 39.2 ± 1.2 | 38.5 ± 1.8 | 38.7 ± 1.7 | 0.24 |
| Infant birth weight (grams) | 3381 ± 562 | 3363 ± 517 | 3369 ± 524 | 0.64 |
*
p-values are included to identify the association between maternal vitamin D status and other demographic variables of interest.
Of note, African Americans and Hispanics are more likely to be vitamin D deficient (p=0.043). The type of insurance (p=0.104), maternal marriage status (p=0.759), maternal age (p=0.306), gestational age (p=0.239), baseline 25(OH)D (p=0.096), maternal BMI (p=0.563), birthweight (p=0.644) were not significantly different between the vitamin D sufficient and vitamin D deficient patients.