[Delivery in adolescence]

We analysed structure of age within 16,602 deliveries between 1947 and 1977 and data collected from 17,056 deliveries between 1989 and 1992 in Institute of Obstetrics and Gynaecology in Poznań. Percent of women under age 18 deliveries increased from 0.58% in 1947 to 1.3% in the last years. We observed a significant difference in group of teenage mothers: the higher risk of prematurity, lower average birth weight of neonates, lower frequency of cesarean section and higher frequency of surgical assisted vaginal deliveries. There was no significant differences in the frequency of birth weight under 2500 g.