Table 1:
Baseline demographics
| Baseline Maternal Characteristic | All subjects | Controls (400 IU) | Treated (4000 IU) | p-value | |
|---|---|---|---|---|---|
| Subjects | 236 | 112 | 124 | ||
| Age in Years, Mean (Range) | 29 (18-42) | 29 (18-42) | 29 (20-41) | 0.6421 | |
| BMI at baseline visit 1, Mean | 33.19 | 30.33 | 35.79 | 0.4941 | |
| Race/Ethnicity, N (%) | American Indian | 2 (1%) | 1 (1%) | 1 (1%) | 0.3902 |
| African American | 83 (35%) | 39 (35%) | 44 (35%) | ||
| Hispanic | 61 (26%) | 34 (30%) | 27 (22%) | ||
| White/Caucasian | 90 (38%) | 38 (34%) | 52 (42%) | ||
| Gravidity, Median (Range) | 2 (1-14) | 2 (1-14) | 2 (1-6) | ||
| Parity, Median (Range) | 1 (0-4) | 1 (0-4) | 1 (0-3) | ||
| Education, N (%) | < High School | 25 (10%) | 17 (15%) | 8 (6%) | 0.0182 |
| High School | 56 (24%) | 31 (28%) | 25 (20%) | ||
| College | 155 (66%) | 64 (57%) | 91 (74%) | ||
| Insurance Status, N (%) | Private insurance | 105 (44%) | 44 (39%) | 61 (49%) | 0.3122 |
| Medicaid | 84 (36%) | 44 (39%) | 40 (32%) | ||
| Self-Pay | 47 (20%) | 24 (22%) | 23 (19%) | ||
| Mean Gestational Age at Delivery (weeks. days) | 38.90 | 39.0 | 38.81 | 0.4101 | |
| Number term (>=37 weeks) | 217 | 107 | 111 | 0.0912 | |
| Number preterm (<37, >=34 weeks) | 18 | 4 | 12 | ||
| Number early preterm (<34 weeks) | 2 | 1 | 1 | ||
P values calculated using 1Welch’s t-test or 2Fisher’s exact test, as appropriate.