Table 3. Clinical Characteristics and Outcomes in Two-Parous Women With and Without Precipitate Labor.
| Precipitate labor | Normal group | P-value | Crude OR | 95% CI | |
|---|---|---|---|---|---|
| Total | 320 | 590 | |||
| Maternal age | |||||
| < 20 years | 0 (0) | 1 (0.2) | 0.47 | - | - |
| 20 - 34 years | 169 (52.8) | 326 (55.3) | - | Reference | - |
| ≥ 35 years | 151 (47.2) | 263 (44.6) | 0.46 | 1.11 | 0.84 - 1.46 |
| Gestational age at delivery | |||||
| < 37 weeks | 21 (6.6) | 30 (5.1) | 0.28 | 1.37 | 0.77 - 2.44 |
| 37 - 40 weeks | 261 (81.6) | 511 (86.6) | - | Reference | - |
| 41 - 42 weeks | 38 (11.9) | 49 (8.3) | 0.07 | 1.52 | 0.97 - 2.38 |
| Hypertensive disorders | 30 (9.4) | 15 (2.7) | < 0.01 | 3.71 | 1.99 - 6.92 |
| Glucose intolerance | 10 (3.1) | 15 (2.5) | 0.61 | 1.24 | 0.55 - 2.79 |
| Oxtocin use | 35 (10.9) | 35 (5.9) | < 0.01 | 1.95 | 1.19 - 3.18 |
| Placental abruption | 4 (1.3) | 4 (0.7) | 0.38 | 1.85 | 0.46 - 1.47 |
| Vacuum/forceps delivery | 9 (2.8) | 16 (2.7) | 0.97 | 1.01 | 0.44 - 2.32 |
| Neonatal birth weight | |||||
| < 2,500 g | 28 (8.8) | 42 (7.1) | 0.35 | 1.27 | 0.77 - 2.10 |
| 2,500 - 3,499 g | 247 (77.2) | 470 (79.7) | - | Reference | - |
| ≥ 3,500 g | 45 (14.1) | 48 (13.2) | 0.65 | 1.1 | 0.74 - 1.63 |
| Apgar score at 1 min < 4 | 0 (0) | 1 (0.2) | 0.46 | - | - |
| Apgar score at 5 min < 7 | 0 (0) | 0 (0) | - | - | - |
| Umbilical artery pH < 7 | 0 (0) | 0 (0) | - | - | - |
| Total blood loss ≥ 1,000 mL | 17 (5.3) | 32 (5.4) | 0.94 | 0.98 | 0.53 - 1.79 |
| Hemotransfusion | 0 (0) | 0 (0) | - | - | - |
| Cervical laceration | 3 (0.9) | 8 (1.4) | 0.58 | 0.69 | 0.18 - 2.61 |
| Severe perineal laceration | 0 (0) | 3 (0.5) | 0.2 | - | - |
Values are expressed as number (percentage). OR: odds ratio; CI: confidence interval. Severe perineal laceration, perineal laceration either third- or fourth-degree laceration.