Table 2.
Cesarean delivery rates and risk ratios for associations between policy implementation and cesarean delivery in all term births before or after policy implementation.
| Pre-policy (n=580) | Post-policy (n=630) | Unadjusted RR (95% CI) | Adjusted RR (95% CI) | |
| All deliveries | 241 (41.6) | 297 (47.1) | 1.13 (1.00–1.29) | 1.03a (0.92–1.14) |
| Parousb | 163 (40.8) | 203 (44.7) | 1.10 (0.94–1.28) | 0.96c (0.85–1.08) |
| Nulliparous | 78 (43.3) | 94 (53.4) | 1.23 (0.99–1.53) | 1.15d (0.93–1.42) |
| Patients attempting vaginal delivery | Pre-policy (n=456) | Post-policy (n=458) | Unadjusted RR (95% CI) | Adjusted RR (95% CI) |
| All vaginal delivery attempts | 117 (25.7) | 125 (27.3) | 1.06 (0.86–1.32) | 0.94a (0.77–1.14) |
| Parous | 52 (18.0) | 41 (14.0) | 0.78 (0.54–1.14) | 0.64c (0.45–0.92) |
| Nulliparous | 65 (38.9) | 84 (50.6) | 1.30 (1.02–1.66) | 1.18d (0.94–1.48) |
| With Induction of Labor | ||||
| Parous | 34 (24.3) | 31 (16.9) | 0.69 (0.45–1.07) | 0.62c (0.41–0.94) |
| Nulliparous | 50 (44.3) | 75 (59.5) | 1.35 (1.05–1.73) | 1.32d (1.04–1.68) |
| With Spontaneous Labor | ||||
| Parous | 18 (12.1) | 10 (9.3) | 0.77 (0.37–1.59) | 0.60e (0.29–1.27) |
| Nulliparous | 15 (27.8) | 9 (22.5) | 0.81 (0.40–1.66) | 0.90f (0.45–1.81) |
Abbreviations used: RR = risk ratio.
Data are presented as n (%) and risk ratio (95% confidence interval).
Adjusted model controlled for maternal age, race, parity, body mass index, prior cesarean, cervical ripening (yes/no), labor induction, and payor
Defined as having one or more prior deliveries at or beyond 20 weeks gestation
Adjusted model controlled for maternal age, race, body mass index, prior cesarean, cervical ripening, labor induction, and payor
Adjusted model controlled for maternal age, race, body mass index, cervical ripening, labor induction, and payor
Adjusted model controlled for maternal age, race, body mass index, prior cesarean, and payor
Adjusted model controlled for maternal age, race, body mass index, and payor