Table 3.
Delivery-related outcomes
| Outcome parameter | Nulliparous | Parous | Total | p value* |
|---|---|---|---|---|
| Vaginal delivery, n/N (%) | 139/232 (59.9) | 105/122 (86.1) | 244/354 (68.9) | < 0.001 |
| Vaginal delivery within 12 h, n/N (%) | 40/139 (28.8) | 53/105/ (50.5) | 93/244/ (38.1) | 0.001 |
| Vaginal delivery within 24 h, n/N (%) | 116/139 (83.5) | 89/105 (84.8) | 205/244 (84.0) | n.s. |
| Vaginal delivery within 30 h, n/N (%) | 131/139 (94.2) | 97/105 (92.4) | 228/244 (93.4) | n.s. |
| Time to vaginal delivery, h median (95% CI) | 14.5 (13.6–16.1) | 11.9 (10.6–14.0) | 14.0 (13.1–14.8) | 0.014 |
| Time to insert removal, h median (95% CI) | 9.5 (1.5–29.0) | 8.9 (1.3–24.0) | 9.2 (1.3–29.0) | n.s. |
| Time to onset of active labor, h median, (95% CI) | 4.2 (3.2–5.3) | 2.2 (1.6–2.8) | 3.2 (2.9–3.8) | < 0.001 |
| Any delivery within 12 h, n/N (%) | 67/232 (28.9) | 63/122 (51.6) | 130/354 (36.7) | < 0.001 |
| Any delivery within 24 h, n/N (%) | 178/232 (76.7) | 105/122 (86.1) | 283/354 (79.9) | 0.037 |
| Any delivery within 30 h, n/N (%) | 207/232 (89.2) | 114/122 (93.4) | 321/354 (90.7) | n.s. |
| Time to any delivery, h median (95% CI) | 14.9 (14.2–16.2) | 11.8 (10.3–13.4) | 14.3 (13.4–14.9) | < 0.001 |
| Women requiring pre-delivery oxytocin, n/N (%) | 20/232 (8.6) | 2/122 (1.6) | 22/354 (6.2) | < 0.001 |
| Women requiring tocolysis, n/N (%) | 43/232 (18.5) | 14/122 (11.5) | 57/354 (16.1) | 0.014 |
| Cesarean delivery, n/N (%) | 93/232 (40.1) | 17/122 (13.9) | 110/354 (31.1) | < 0.001 |
| Emergency cesarean delivery, n/N (%) | 7/232 (3.0) | 5/122 (4.1) | 12/354 (3.4) | n.s. |
| Operative vaginal delivery, n (%) | 28/232 (12.1) | 1/122 (0.8) | 29/354 (8.2) | < 0.001 |
| Time in delivery room, h median (95% CI) | 5.6 (0.03–32.4) | 3.2 (0.1–12.7) | 4.7 (0.03–32.4) | < 0.001 |
CI confidence interval
*Chi-squared test was used for nominal data (%) and Mann–Whitney U test was used for nonparametric variables (median)