Objectives: describing maternal characteristics, risk behavior, obstetric data, prenatal care and childbirth in adolescent mothers in Brazil (age groups: 12-16 years and 17-19 years). Methods: hospital-based cross-sectional study substantiated by Nascer no Brasil”, (Born in Brazil) data. The study encompassed puerperal adolescent mothers from all regions in the country, and their newborns. Chi-square test was used to compare adolescents in the 12-16 years old age group and those in the 17-19 years old age group. Results: pregnant women in the 12-16 years old age group mostly lived in the Northeast of Brazil (p=0.014); most of them did not have a partner (p<0.001), unplanned pregnancy (p<0.001), they had inadequate schooling for their age (p=0.033), had less than six prenatal consultations (p=0.021), were subjected to episiotomy (p=0.042) and accounted for the largest number of premature babies (p=0.014). Conclusions: puerperal women in the 12-16 years old age group presented vulnerability in their socioeconomic conditions, inadequate assistance at the prenatal and childbirth care, as well as their babies showed neonatal complications that pointed towards these adolescent mothers’ need of multidisciplinary care.

Objective: To identify the associated factors of neonatal near miss among newborns of Brazilian adolescents and to compare their occurrence in young women aged 12 to 16 years and 17 to 19 years. Method: Cross-sectional, hospital-based study, using data from the study Nascer no Brasil (“Birth in Brazil”) on puerperal adolescents and their newborns in all regions of Brazil. Multiple and univariate logistic regression were employed to identify the associated factors of neonatal near miss. Results: The following factors were found to be associated to neonatal near miss among newborns of adolescent mothers: public source of payment (OR = 4.57, 95% CI = 2.02–10.32), having to seek help in different maternity hospitals (OR = 1.52; 95% CI = 1.05–2.20), and maternal near miss (OR = 5.92; 95% CI = 1.94–18.05), in addition to a record of low weight in a previous pregnancy (OR = 3.12; 95% CI = 1.61–6.04) and twin pregnancy (OR = 7.49; 95% CI = 3.28–16.82). Conclusion: Neonatal near miss affected newborns of adolescent mothers in both age groups equally. Also, the determinant factors of neonatal near miss can be mostly reduced with qualified prenatal, labor, and birth care.

The present study aims to analyze the socioeconomic and demographic factors associated with the recurrence of teenage pregnancy, as well as to verify the association with unfavorable maternal and neonatal outcomes. It is a cross-sectional study, based on data from “Nascer no Brasil”, comprised of adolescent mothers and their newborns. Univariate and multiple logistic regression were used to indicate the factors associated with this recurrence. Recurrence of teenage pregnancy was associated with a maternal age of 17-19 years (OR=3.35; 95%CI=2.45-4.59); an inadequate education for their age (OR=4.34; 95%CI=3.50-5.39), with no intention of becoming pregnant; residency in the state capital; and the fact that the partner is the head of the family. However, as independent primiparous teenagers, there is a greater chance of hypertension and restricted intrauterine growth. It can therefore be concluded that there is a high percentage of teenage pregnancies in Brazil. Teenagers with a partner, inadequate education, and no reproductive planning are more likely to have two or more pregnancies before the age of 20, demonstrating difficulties in postponing the first pregnancy. However, as primiparous teenagers, they are more likely to have complications than multiparous teenagers.

Resumo O objetivo é analisar os fatores socioeconômicos e demográficos associados à reincidência de gravidez na adolescência, assim como verificar a associação com desfechos maternos e neonatais desfavoráveis. É um estudo transversal, a partir dos dados do “Nascer no Brasil”, composto por puérperas adolescentes e seus recém-nascidos. Utilizou-se regressão logística univariada e múltipla para indicar os fatores associados à essa reincidência. A reincidência da gravidez na adolescência esteve associada à idade materna de 17-19 anos (OR=3,35; IC95%=2,45-4,59), à escolaridade inadequada para a idade (OR=4,34; IC95%=3,50-5,39), à intenção de engravidar, à residência na capital do estado e ao fato do companheiro ser chefe da família. No entanto, as adolescentes primíparas apresentaram maior chance de doença hipertensiva e crescimento intrauterino restrito. Conclui-se que há um elevado percentual de reincidência de gravidez na adolescência no Brasil. Adolescentes com companheiro, pouca escolaridade e sem planejamento reprodutivo são as mais expostas a ter duas ou mais gestações antes dos 20 anos, demostrando dificuldades em postergar a primeira gestação. Todavia as adolescentes primíparas apresentam maior chance de intercorrências do que as multíparas.

RESUMO Objetivo: Identificar os fatores associados ao near miss neonatal em recém-nascidos de adolescentes brasileiras e comparar sua ocorrência entre as jovens de 12 a 16 anos e as de 17 a 19 anos. Método: Estudo transversal, de base hospitalar, com dados da pesquisa “Nascer no Brasil”, composto por puérperas adolescentes e seus recém-nascidos em todas as regiões do país. Utilizou-se regressão logística univariada e múltipla para identificar os fatores associados ao near miss neonatal. Resultados: Mostraram-se associados ao near miss neonatal de recém-nascidos de mães adolescentes os fatores fonte de pagamento público (OR = 4,57, IC95% = 2,02–10,32), peregrinação por maternidades (OR = 1,52; IC95% = 1,05–2,20) e presença de near miss materno (OR = 5,92; IC95% = 1,94–18,05), além de histórico de baixo peso em gestação anterior (OR = 3,12; IC95% = 1,61–6,04) e gemelaridade (OR = 7,49; IC95% = 3,28–16,82). Conclusão: O near miss neonatal acometeu igualmente os recém-nascidos de mães adolescentes de ambas as faixas etárias. Além disso, os determinantes do near miss neonatal, em sua maioria, podem ser reduzidos com atenção qualificada ao pré-natal, parto e nascimento.