Among cases with cesarean section, 76% (60/79) of cesarean
sections were performed due to failure to progress. The rate of
cesarean sections due to failure to progress was also significantly
higher in patients with ‘‘early ROM’’ than those with ‘‘late ROM’’
(18% [38/215] vs. 8% [22/285]; p,0.01) and this difference also
remained significant after adjusting for maternal age, use of
intravenous oxytocin or regional analgesia, gestational age at
delivery, birthweight, macrosomia, and presence of acute histologic
chorioamnionitis and funisitis [adjusted odds ratio (OR),
2.06; 95% Confidence interval (CI), 1.06–3.99]. However, the rate
of cesarean section due to fetal distress and the rate of operative
vaginal deliveries were not different between the two groups
(p.0.1 for each, Table 3).