[Adolescence and reproduction in Brazil: the heterogeneity of social profiles].

This study aims to estimate the prevalence of adolescent pregnancy (AP) in three Brazilian cities Salvador, Rio de Janeiro, and Porto Alegre and to examine the profiles of pregnant girls and their partners in relation to pregnancy outcomes. Data for a retrospective assessment of AP were collected using an interview-based household survey applied to a stratified sample of males and females aged 18-24. A total of 4,634 individuals were interviewed (85.2 % of the eligible individuals). 21.4% of males and 29.5% of females aged 20-24 reported AP, but few such pregnancies had taken place before age 15 (0.6% and 1.6%). Pregnancy between adolescent partners was reported by 55.1% of males and 27.9% of females. 79.8% of the latter became pregnant while involved in a stable relationship with an older partner. AP levels varied inversely to schooling and income levels. 72.2% of females and 34.5% of males carried their first AP to completion, and more cases of induced abortion were reported by male partners in pregnancies (41.3%) than by females (15.3%). With the birth of the first child, 25.0% of women interrupted their studies temporarily and 17.3% definitively. However, 42.1% of primiparous mothers were already outside school before pregnancy.