Table 1.
Population Characteristics
| Maternal age at delivery (years) | 29 ± 6.2 |
| Parity | |
| 0 | 116 (46.0) |
| 1 | 72 (28.6) |
| 2 or more | 64 (25.4) |
| Insurance for pregnancy | |
| None | 12 (4.8) |
| Government | 100 (39.7) |
| Private | 127 (50.4) |
| Unknown | 13 (5.2) |
| Race/ethnicity | |
| Caucasian | 132 (52.4) |
| Black | 27 (10.7) |
| Hispanic | 34 (13.5) |
| Asian | 13 (5.2) |
| Other | 12 (4.8) |
| Mixed | 9 (3.6) |
| Unknown | 25 (9.9) |
| Tobacco use in pregnancy | 25 (9.9) |
| Body mass index (kg/m2) | 28.7 ± 8.0 |
| Gestational age at delivery (weeks) | 38.1 ± 2.4 |
| Type of delivery | |
| Spontaneous vaginal delivery | 132 (52.4) |
| Operative vaginal delivery | 10 (4.0) |
| Planned cesarean section | 67 (26.6) |
| Unplanned cesarean section | 43 (17.1) |
Mean ± standard deviation for continuous variables and n (%) for categorical variables.