Factors associated with spontaneous preterm birth in Addis Ababa public hospitals, Ethiopia: cross sectional study.

Background: Spontaneous preterm birth is commencement of labor with intact or pre labor rapture of membrane and birth before 37 weeks of gestation. The aim of this study was to identify common factors associated with spontaneous preterm birth in Addis Ababa public hospitals.

Methods: After random selection of three hospitals from the six Addis Ababa's Public hospitals having Neonatal intensive care unit, systematic sampling was employed to select study units from admission log book of the neonates.