Fig. 2

Kaplan Meier Curves showing proportion of patients undelivered vs. time, by misoprostol dosing interval. Shaded areas represent the 95% confidence interval as calculated by the Kaplan Meier Curve Estimator. Crosses represent patients censored for cesarean delivery or vacuum assisted vaginal delivery. a demonstrates a significant difference in the hazard ratio even when delay of misoprostol administration was accounted for. b is stratified by parity, and Cox Proportional Hazard Ratio for each of the above covariates is significant, with P values less than 0.05 (see Table 3)