Table 3. Intrapartum characteristics.
| USE (N = 71)a | Control (N = 74)a | p | RR (95% CI) | |
|---|---|---|---|---|
| Gestational age at delivery | 38.8 ± 1.3 | 39.2 ± 1.2 | 0.47 | |
| Delivery at < 37 wk | 3 (4%) | 2 (3%) | 0.67 | 1.23 (0.34–1.94) |
| Induced only for ultrasonographic abnormalities | ||||
| < 37 wk | 0 | 0 | – | – |
| 38–39 wk | 0 | 0 | – | – |
| Labor | ||||
| Spontaneous | 38 (53%) | 39 (52%) | 1.00 | 1.01 (0.71–1.46) |
| Induction | 29 (40%) | 30 (40%) | 1.00 | 1.01 (0.69–1.43) |
| Route of delivery | ||||
| Spontaneous vaginal delivery | 53 (74%) | 54 (73%) | 1.00 | 1.01 (0.69–1.57) |
| Operative vaginal delivery | 2 (3%) | 5 (7%) | 0.44 | 0.57 (0.10–1.44) |
| Cesarean delivery | 16 (23%) | 15 (20%) | 0.84 | 1.07 (0.66–1.55) |
| Indications for cesarean delivery | ||||
| Nonreassuring FHR | 4 (5%) | 6 (8%) | 0.74 | 0.80 (0.27–1.52) |
| Cephalopelvic disproportion | 6 (8%) | 5 (7%) | 0.76 | 1.12 (0.49–1.76) |
| Other | 6 (8%) | 4 (5%) | 0.52 | 1.27 (0.55–1.86) |
Abbreviations: FHR, fetal heart rate; USE, ultrasonographic examination.
Note: Data presented as mean ± standard deviation or N (%).
a
Three women in intervention and one in control group were lost to follow-up because they delivered at a different hospital with no access to records.