At SFGH, women who were younger than 22 years were half as likely to have delivered by cesarean as women who were 22 to 35 years old (OR=0.48; Table 4). In addition, women who had more than 12 years of
education (OR=1.9), were primiparous (OR= 3.5), or were multiparous with a history of cesarean delivery (OR=20) were more likely to deliver by cesarean than were women from the reference categories. Women who experienced delivery complications (OR=5.3) and women who delivered infants who weighed more than 4000 grams (OR=2.6) were 2.5 to 5 times more likely to have a cesarean delivery than were women without delivery complications or women who delivered infants of normal birth weight.