Table 1. Factors associated with vaginal birth after cesarean in multivariable logistic regression.
| Variable | Odds ratio | 95% confidence interval |
|---|---|---|
| Maternal age (years) | 0.96 | 0.95 – 0.97 |
| Maternal race | ||
| Caucasian and others | Referent | ----------------- |
| Latina | 0.47 | 0.41 – 0.54 |
| African American | 0.63 | 0.56 – 0.72 |
| Recurring indication for cesarean | 0.52 | 0.47 – 0.58 |
| Any prior vaginal delivery | 2.60 | 2.21 – 3.05 |
| Vaginal delivery after prior cesarean | 2.34 | 1.94 – 2.83 |
| BMI at last prenatal visit (kg/m2) | 0.96 | 0.95 – 0.97 |
| EGA at delivery (weeks) | 0.90 | 0.86 – 0.94 |
| Preeclampsia | 0.61 | 0.45 – 0.82 |
| Cervical effacement at admission (10%) | 1.05 | 1.02 – 1.07 |
| Cervical dilation at admission (cm) | 1.12 | 1.08 – 1.16 |
| Station at admission (fifths scale) | 1.09 | 1.05 – 1.12 |
| Induction of labor* | 0.64 | 0.58 – 0.70 |
BMI = body mass index; EGA = estimated gestational age
*
marginal estimates