Clinical Study
Risk Factors for Cesarean Delivery following Labor Induction in Multiparous Women
Table 1
Characteristics of the study population at start of induction of labor.
| Characteristics | Failed induction in multiparous women () | Successful induction in multiparous women () | Odds ratio (95% CI) | value |
| Maternal age in years, mean (±SD) | 32.5 (3.8) | 32.1 (3.7) | 1.1 (0.96–1.1) | 0.447 | Gestational age in weeks, median (range) | 39+2 (37+0–42+1) | 40+2 (37+0–42+2) | 0.97 (0.95–0.99) | 0.021 | BMI in kg/m2, mean (±SD) | 27.8 (5.3) | 25.8 (5.2) | 1.1 (1.01–1.14) | 0.024 | Height in cm, mean (±SD) | 165.7 (7.3) | 169.4 (6.7) | 0.92 (0.88–0.97) | <0.001 | Weight gain in pregnancy in kg, mean (±SD) | 12.1 (5.2) | 13.7 (5.4) | 0.94 (0.88–1.0) | 0.105 | Parity | | | | | 1 | 52 (65%) | 99 (62%) | 0.87 (0.50–1.5) | 0.637 | ≥2 | 28 (35%) | 61 (38%) | | | History of preterm delivery | 21 (27%) | 14 (9%) | 3.5 (1.8–6.9) | 0.0001 | Previous cesarean delivery | 6 (8%) | 6 (4%) | 2.1 (0.65–6.7) | 0.218 | Reason for induction | | | | | Prelabor rupture of membranes | 3 (4%) | 8 (5%) | 1.0 | 0.411 | Hypertensive disorder | 14 (18%) | 24 (15%) | 1.6 (0.35–6.8) | 0.559 | Postdates (≥42+0) | 16 (20%) | 36 (23%) | 1.2 (0.28–5.1) | 0.819 | Maternal disease | 7 (9%) | 15 (9%) | 1.2 (0.25–6.2) | 0.789 | Intrauterine growth restriction | 5 (6%) | 11 (7%) | 1.2 (0.22–6.6) | 0.824 | Nonreassuring fetal heart rate | 2 (3%) | 1 (1%) | 5.3 (0.34–83) | 0.232 | Other reasons | 17 (21%) | 18 (11%) | 2.5 (0.57–11) | 0.222 | Maternal request | 16 (20%) | 47 (29%) | 0.91 (0.21–3.8) | 0.895 |
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CI: confidence interval.
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