Table 1.
Results of univariate analysis of neonatal, maternal, and placental variables
| Variable | Full term (n=70) | Late preterm (n=90) | P value |
|---|---|---|---|
| Placental histopathology | |||
| Chorioamnionitis | 35 (50.0) | 16 (17.8) | <0.001 |
| Funisitis | 14 (20.0) | 4 (4.4) | 0.002 |
| Hemorrhage | 7 (10.0) | 4 (4.4) | 0.21 |
| Placental Abruption | 1 (1.4) | 4 (4.4) | 0.39 |
| Infarction | 10 (14.3) | 23 (25.6) | 0.08 |
| Syncytial knots | 8 (11.4) | 19 (21.1) | 0.11 |
| Calcifications | 23 (32.9) | 18 (20.0) | 0.07 |
| Infant variables | |||
| Birth weight (g) | 3,208.8±530.11 | 2,024.4±518.98 | <0.001 |
| Gestational age (wk) | 38.9±1.38 | 33.0±1.98 | <0.001 |
| Male sex | 36 (51.4) | 55 (61.1) | 0.22 |
| Race/ethnicity | |||
| White | 11 (15.7) | 11 (12.2) | |
| Black | 18 (25.7) | 24 (26.7) | |
| Hispanic | 36 (51.4) | 47 (52.2) | |
| Other | 5 (7.1) | 8 (8.9) | |
| Growth | 0.99 | ||
| Appropriate for gestational age | 59 (84.3) | 76 (84.4) | |
| Large for gestational age | 5 (7.1) | 6 (6.7) | |
| Small for gestational age | 6 (8.6) | 8 (8.9) | |
| Apgar at 1 min | 7.3±2.45 | 7.4±1.89 | 0.89 |
| Apgar at 5 min | 8.2±1.55 | 8.2±1.10 | 0.66 |
| Maternal variable | |||
| Age (yr) | 28.1±5.99 | 30.4±6.49 | 0.02 |
| Substance abuse | 2 (2.9) | 3 (3.3) | 1.00 |
| Gestational diabetes mellitus | 5 (7.1) | 7 (7.8) | 0.88 |
| Maternal hypertension | 9 (12.9) | 26 (28.9) | 0.02 |
| Magnesium sulfate (maternal treatment) | 14 (20.0) | 44 (48.9) | <0.001 |
| Antibiotics (maternal treatment) | 42 (60.0) | 53 (58.9) | 0.89 |
| Duration of rupture of membrane (hr) | 13.6±13.54 | 9.1±15.66 | <0.001 |
Values are presented as number (%) or mean±standard deviation.
Boldface indicates a statistically significant difference with P<0.05.