ABSTRACT OBJECTIVE To determine the total demand and unmet need for contraception with modern methods and their determinants among mothers participating in the 2015 Pelotas Birth Cohort. METHODS Data from the 48-month follow-up of mothers participating in the 2015 Pelotas Birth Cohort were analyzed. Only biological mothers (aged up to 49 years) of children belonging to the 2015 Birth Cohort and who answered the 48-month questionnaire were included in the study sample. Logistic regression and respective 95% confidence intervals were used to determine associated factors. RESULTS The study sample consisted of 3577 biological mothers. The prevalence of use of any contraceptive and of modern contraceptives was 86.0% (95%CI: 84.8–87.1) and 84.9% (95%CI: 83.7–86.1), respectively. The prevalence of unmet need for modern contraceptives was 10.7% (95%CI: 9.7–11.7), and the total demand for contraceptives was 95.6%. The factors associated with an unmet need for modern contraception were being over 34 years of age (OR = 0.6, 95%CI: 0.5–0.8), not having a husband or partner (OR = 1.9, 95%CI: 1.4–2.6), not being the head of the household (OR = 0.6, 95%CI: 0.4–0.9), having had three or more pregnancies (OR = 1.9, 95%CI: 1.3–2.6), and having had an abortion at least once after the birth of the child participating in the cohort (OR = 1.9, 95%CI: 1.0–3.6). CONCLUSIONS Despite the high prevalence of modern contraceptive use, one in ten women had an unmet need for modern contraception and was at risk of unplanned pregnancy.

RESUMO: Objetivo: Avaliar a tendência de mortalidade materna no Brasil e nas cinco regiões brasileiras, de 2001 a 2012, e descrever suas principais causas. Métodos: Trata-se de uma série temporal, a partir de dados obtidos no Sistema de Informação sobre Mortalidade e no Sistema de Informação sobre Nascidos Vivos. A razão de mortalidade materna e as causas de morte materna foram descritas conforme as categorias da 10ª revisão da Classificação Internacional de Doenças, nos anos de 2001, 2006 e 2011. Para estimar a tendência temporal foi utilizada a regressão linear. Resultados: A razão de mortalidade materna mais elevada no Brasil foi no ano de 2009 (77,31 por 100 mil nascidos vivos). Foi observada tendência significativa de diminuição da razão de mortalidade materna para as regiões Nordeste e Sul e de aumento na região Centro-Oeste. Houve incremento nas mortes por outras afecções obstétricas e uma queda nas mortes por edema, proteinúria e transtornos hipertensivos. Conclusão: Embora tenham sido observadas tendências de diminuição da razão de mortalidade materna para o Nordeste e o Sul, as elevadas taxas observadas para o Brasil evidenciam a necessidade de melhoria à assistência pré-natal, ao parto e ao puerpério.

ABSTRACT: Objective: To assess time trends in maternal mortality in Brazil and its five geographical regions from 2001 to 2012, as well as to describe its main causes. Methods: This is a time series analysis, from data obtained in the Mortality Information System (SIM) and in the Live Births Information System (SINASC). Maternal mortality ratio (MMR) and causes of maternal death were described according to the categories of the Tenth Revision of the International Classification of Diseases, in the years 2001, 2006, and 2011. To estimate time trends, linear regression was used. Results: The highest MMR in Brazil was observed in 2009 (77.31 per 100,000 live births). A significant decreasing trend was observed in the Northeast and South regions and a significant increasing trend was found in the Midwest. There was an increase in deaths from other obstetric conditions and a decrease in deaths from edema, proteinuria and hypertensive disorders. Conclusion: Although there was a decreasing trend in the MMR in the Northeast and South regions, the high ratio observed in Brazil reveals the need to improve health care in prenatal, childbirth, and puerperium periods.

RESUMO: Objetivo: Avaliar a tendência de mortalidade materna no Brasil e nas cinco regiões brasileiras, de 2001 a 2012, e descrever suas principais causas. Métodos: Trata-se de uma série temporal, a partir de dados obtidos no Sistema de Informação sobre Mortalidade e no Sistema de Informação sobre Nascidos Vivos. A razão de mortalidade materna e as causas de morte materna foram descritas conforme as categorias da 10ª revisão da Classificação Internacional de Doenças, nos anos de 2001, 2006 e 2011. Para estimar a tendência temporal foi utilizada a regressão linear. Resultados: A razão de mortalidade materna mais elevada no Brasil foi no ano de 2009 (77,31 por 100 mil nascidos vivos). Foi observada tendência significativa de diminuição da razão de mortalidade materna para as regiões Nordeste e Sul e de aumento na região Centro-Oeste. Houve incremento nas mortes por outras afecções obstétricas e uma queda nas mortes por edema, proteinúria e transtornos hipertensivos. Conclusão: Embora tenham sido observadas tendências de diminuição da razão de mortalidade materna para o Nordeste e o Sul, as elevadas taxas observadas para o Brasil evidenciam a necessidade de melhoria à assistência pré-natal, ao parto e ao puerpério.

ABSTRACT: Objective: To assess time trends in maternal mortality in Brazil and its five geographical regions from 2001 to 2012, as well as to describe its main causes. Methods: This is a time series analysis, from data obtained in the Mortality Information System (SIM) and in the Live Births Information System (SINASC). Maternal mortality ratio (MMR) and causes of maternal death were described according to the categories of the Tenth Revision of the International Classification of Diseases, in the years 2001, 2006, and 2011. To estimate time trends, linear regression was used. Results: The highest MMR in Brazil was observed in 2009 (77.31 per 100,000 live births). A significant decreasing trend was observed in the Northeast and South regions and a significant increasing trend was found in the Midwest. There was an increase in deaths from other obstetric conditions and a decrease in deaths from edema, proteinuria and hypertensive disorders. Conclusion: Although there was a decreasing trend in the MMR in the Northeast and South regions, the high ratio observed in Brazil reveals the need to improve health care in prenatal, childbirth, and puerperium periods.