Document Classification

Section Type: RESULTS

Text: The following variables were found to be significantly associated with cesarean delivery : delivery in Israel, versus Canada (odds ratio [OR] 0. 34) ; delivery in Australia, versus Canada (OR 1. 93) ; nulliparity (OR 2. 81) ; labor lasting more than 12 hours, versus less than 6 hours (OR 2. 78) ; labor lasting 6-12 hours, versus less than 6 hours (OR 1. 66) ; previous cesarean delivery (OR 2. 75) ; epidural anesthesia (OR 2. 66) ; clinical chorioamnionitis (OR 2. 42) ; internal fetal heart rate monitoring (OR 2. 19) ; birth weight of at least 4000 g (OR 2. 07) ; use of oxytocin (OR 1. 97) ; maternal age of at least 35 years (OR 1. 44) ; latent period of at least 12 hours (OR 1. 41) ; and meconium staining (OR 1. 41).