Table 1.
Clinical characteristics of the mothers and neonates according to whether labor began spontaneously
| Group 1 (Spontaneous labor, n=333) | Group 2 (Induced labor, n=198) | p value | |
|---|---|---|---|
| Clinical characteristics | |||
| Maternal age(yr) | 30.9±3.5 | 31.5±3.4 | NS |
| Gestational age at delivery(wk) | 39.7±1.0 | 40.0±1.2 | <0.05 |
| Nulliparity | 183/333 (55.0%) | 133/198 (67.2%) | < 0.05† |
| Labor duration (min) | 260.0±193.1 | 243.4±176.7 | NS |
| ROM duration (min) | 243.3±414.5 | 518.6±749.9 | < 0.001 |
| Cesarean delivery | 27/333 (8.1%) | 33/198 (16.7%) | < 0.05† |
| Maternal fever a | 50/329 (15.2%) | 43/198 (21.7%) | 0.06† |
| Neonatal characteristics | |||
| Birth weight (gm) | 3240.8±411.1 | 3298.7±475.6 | NS |
| SGA | 28/333 (8.4%) | 23/198 (11.6%) | NS† |
| AS1 < 4 | 1/333 (0.3%) | 5/198 (2.5%) | < 0.05* |
| AS5 < 7 | 1/333 (0.3%) | 5/198 (2.5%) | < 0.05* |
| Cord pH | 7.285±0.058 | 7.262±0.069 | < 0.001 |
| Meconium staining | 73/333 (21.9%) | 38/198 (19.2%) | NS† |
| Admission to NICU (adjusted a) | 2/333 (0.6%) | 2/198 (1.0%) | NS* |
Values are given as mean ± SD.
ROM: rupture of membranes, SGA: small for gestational age, AS1: 1 minute Apgar score, AS5: 5 minute Apgar score, NICU: neonatal intensive care unit, NS: not significant.
a
Highest body temperature of more than 38.0°C on the day of delivery
b
NICU admission due to major anomalies were excluded.
*
Fisher’s exact test.
†
Chi-square test