Table 1.
Baseline and delivery characteristics of subjects and their infants
| Placental Abruption (n=31) | Controls (n=31) | |
|---|---|---|
| Values shown are mean ± standard deviation unless otherwise specified. P values are shown only for significant differences. Body mass index =weight in kilograms/height2in meters; LMP, last menstrual period; GH, gestational hypertension. | ||
| Maternal Characteristics | ||
| Age (years) | 22.5 ± 5.7 | 20.2 ± 2.4* |
| Height (cm) | 162.5 ± 7.5 | 165.2 ± 6.1 |
| Weight (kg) | 70.3 ± 17.2 | 70.6 ± 17.6 |
| Body-mass index (kg/m2) | 26.6 ± 6.3 | 25.8 ± 5.9 |
| Systolic blood pressure at enrollment (mm Hg) | 108.0 ± 8.6 | 106.9 ± 10.3 |
| Diastolic blood pressure at enrollment (mm Hg) | 59.4 ± 7.6 | 57.8 ± 7.7 |
| Race/Ethnicity [N (%)] | ||
| White, non-Hispanic | 12 (38.7) | 15 (48.4) |
| White Hispanic | 2 (6.5) | 3 (9.7) |
| Black | 14 (45.2) | 13 (41.9) |
| Other | 3 (9.7) | 0 (0.0) |
| Current smoker or quit after LMP [N (%)] | 12 (38.7) | 12 (38.7) |
| Alcohol use ≥ 1/week [N (%)] | 1 (3.2) | 0 (0.0) |
| Calcium treatment [N (%)] | 16 (51.6) | 17 (54.8) |
| Other pregnancy complications – no. (%) | ||
| Hypertension | 10 (32.3) | 0 (0) |
| GH | 3 (9.7) | |
| Mild preeclampsia | 3 (9.7) | |
| Severe preeclampsia | 4 (12.9) | |
| Preterm premature rupture of membranes | 7 (22.6) | 0 (0.0)* |
| Infant Characteristics | ||
| Gestational age at delivery (wks) | 35.8 ± 3.9 | 39.8 ± 1.3† |
| Birth weight (g) | 2330 ± 940 | 3409 ± 475† |
| Preterm delivery [N (%)] | 19 (61.3) | 1(3.2)† |
| Small for gestational age [N (%)] | 7 (25.9) | 0(0.0)‡ |
| Fetal death [N (%)] | 4 (12.9) | 0(0.0) |
*
P<0.05
†
P<0.001
‡
P value not calculated because small for gestational age infants were excluded from the control group.