There are two main etiological categories of last preterm births, spontaneous last preterm births and babies born after induction of labor or cesarean section. spontaneous last preterm births result from complications of preterm labor and premature rupture of membranes. Inductions of labor or cesarean sections are indicated for many fetal and maternal factors, including maternal medical conditions, advanced maternal age, assisted reproductive techniques, multiple births, planned cesarean sections, and maternal request (Mohan&Jain,2011).