Table 1.
Demographics and Baseline Characteristics
| Primigravid (N=7681) | One or more SABs (N=1240) | One or more IABs (N=817) | P | |
|---|---|---|---|---|
| Treatment group | 0.6 | |||
| Placebo | 3827 (49.8) | 610 (49.2) | 420 (51.4) | |
| Vitamins | 3854 (50.2) | 630 (50.8) | 397 (48.6) | |
| Tobacco use | 1057 (13.8) | 225 (18.1) | 211 (25.8) | <0.0001 |
| Married | 3370 (43.9) | 556 (44.8) | 233 (28.5) | <0.0001 |
| Race | <0.0001 | |||
| African American | 1839 (23.9) | 321 (25.9) | 288 (35.3) | |
| Hispanic | 2475 (32.2) | 377 (30.4) | 174 (21.3) | |
| Caucasian/Other | 3367 (43.8) | 542 (43.7) | 355 (43.5) | |
| Maternal age | 23.1 ± 5.0 | 24.5 ± 5.5 | 25.0 ± 5.6 | <0.0001 |
| Total years of schooling | 12.7 ± 2.8 | 12.7 ± 2.7 | 13.5 ± 2.1 | <0.0001 |
| BMI at enrollment | 26.1 ± 6.0 | 27.0 ± 6.6 | 26.4 ± 5.9 | <0.0001 |
| GA at enrollment (weeks) | 13.4 ± 2.1 | 13.3 ± 2.1 | 13.3 ± 2.2 | 0.07 |
Data represented as N (Percent) or Mean ± S. D.
SAB=spontaneous abortion, IAB=induced abortion, BMI=body mass index, GA=gestational age