Early term birth is associated with the risk of preterm and recurrent early term birth in women with 3 consecutive deliveries

Background We assessed the association of early term at first birth (ETB) with the risk of preterm birth (PTB) and ETB in women with 3 consecutive deliveries. Methods We conducted a retrospective cohort study of all women with 3 consecutive singleton births at a single institute from 1994 to 2013. The risk of PTB (<37 weeks), spontaneous PTB and ETB (37−38 weeks) in the 3rd delivery was explored. Results Of 49,259 women delivered in our center...