Resumo Objetivos: estimar o tempo de intenção de amamentar (IA) e sua associação com características sociodemográficas, obstétricas e experiência com amamentação entre gestantes em acompanhamento pré-natal. Métodos: estudo transversal com gestantes em serviços públicos de saúde em Colombo, Paraná. O tempo de IA foi questionado às gestantes. Regressão de Poisson binomial negativa com ajuste robusto da variância permitiu estimar razões de prevalência (RP) brutas e ajustadas, e intervalos de confiança de 95% (IC95%) da associação entre tempo de IA e variáveis de exposição. Resultados: dentre as gestantes (n = 604), 7,9% afirmaram IA por menos de 6 meses, 28,0% de 6 a 11 meses, 38,3% de 12 a 23 e 25,9% por 24 meses ou mais. O tempo médio de IA foi de 13,5 ± 8,4 e mediana de 12 meses. Gestantes em insegurança alimentar moderada (RP=1,34; IC95%=1,04-1,73), multíparas (RP=1,13; IC95%=1,00-1,26), e que referiram terem sido amamentadas quando bebês (RP=1,19; IC95%=1,02-1,40) apresentaram maior tempo de IA. Conclusões: situação de segurança alimentar, primiparidade e exposição ao aleitamento materno na infância são determinantes da IA na gestação. Objetivos (IA sociodemográficas prénatal. prénatal pré natal. natal pré-natal Métodos Colombo Paraná RP (RP ajustadas 95 IC95% IC95 IC (IC95% Resultados n 604, 604 , 604) 79 7 9 7,9 280 28 0 28,0 1 383 38 3 38,3 2 259 25 25,9 mais 135 13 5 13, 84 8 4 8, RP=1,34 RP134 34 (RP=1,34 IC95%=1,041,73, IC95104173 IC95%=1,04 1,73 04 73 IC95%=1,04-1,73) RP=1,13 RP113 (RP=1,13 IC95%=1,001,26, IC95100126 IC95%=1,00 1,26 00 26 IC95%=1,00-1,26) RP=1,19 RP119 19 (RP=1,19 IC95%=1,021,40 IC95102140 IC95%=1,02 1,40 02 40 IC95%=1,02-1,40 Conclusões gestação IC9 (IC95 60 7, 28, 38, 25, RP=1,3 RP13 (RP=1,3 041 IC95%=1,041,73 IC9510417 IC95104 IC95%=1,0 173 1,7 IC95%=1,04-1,73 RP=1,1 RP11 (RP=1,1 001 IC95%=1,001,26 IC9510012 IC95100 126 1,2 IC95%=1,00-1,26 021 IC95%=1,021,4 IC9510214 IC95102 140 1,4 IC95%=1,02-1,4 (IC9 RP=1, RP1 (RP=1, IC95%=1,041,7 IC951041 IC9510 IC95%=1, 17 1, IC95%=1,04-1,7 IC95%=1,001,2 IC951001 IC95%=1,00-1,2 IC95%=1,021, IC951021 14 IC95%=1,02-1, (IC RP=1 (RP=1 IC95%=1,041, IC951 IC95%=1 IC95%=1,04-1, IC95%=1,001, IC95%=1,00-1, IC95%=1,021 IC95%=1,02-1 RP= (RP= IC95%=1,041 IC95%= IC95%=1,04-1 IC95%=1,001 IC95%=1,00-1 IC95%=1,02- IC95%=1,04- IC95%=1,00-
Abstract Objectives: to estimate the intention of breastfeeding (IBF) duration and its association with sociodemographic, obstetric characteristics and experience with breastfeeding among pregnant women undergoing prenatal care. Methods: cross-sectional study, with pregnant women undergoing prenatal care in public health services in Colombo, Paraná, Brazil. The duration of IBF was questioned to pregnant women. Negative binomial Poisson regression with robust variance adjustment allowed estimating crude and adjusted prevalence ratios (PR), and 95% confidence intervals (CI95%) of the association between IBF duration and exposure variables. Results: among the participating pregnant women (n = 604), 7.9% reported having IBF for less than six months, 28.0% from six to 11 months, 38.3% from 12 to 23 and 25.9% for 24 months or more. The mean IBF time was 13.5 ± 8.4 and median of 12 months. Pregnant women with moderate food insecurity (PR=1.34; CI95%=1.04-1.73), multiparous women (PR=1.13; CI95%=1.00-1.26), and who reported having been breastfed as babies (PR=1.19; CI95%=1.02-1.40) had a longer IBF time. Conclusions: food security situation, primiparity and exposure to breastfeeding in childhood are determinants of IBF during pregnancy. Objectives (IBF sociodemographic Methods crosssectional cross sectional study Colombo Paraná Brazil PR, PR , (PR) 95 CI95% CI95 CI (CI95% variables Results n 604, 604 604) 79 7 9 7.9 280 28 0 28.0 1 383 38 3 38.3 2 259 25 25.9 more 135 13 5 13. 84 8 4 8. PR=1.34 PR134 34 (PR=1.34 CI95%=1.041.73, CI95104173 CI95%=1.04 1.73 04 73 CI95%=1.04-1.73) PR=1.13 PR113 (PR=1.13 CI95%=1.001.26, CI95100126 CI95%=1.00 1.26 00 26 CI95%=1.00-1.26) PR=1.19 PR119 19 (PR=1.19 CI95%=1.021.40 CI95102140 CI95%=1.02 1.40 02 40 CI95%=1.02-1.40 Conclusions situation pregnancy (PR CI9 (CI95 60 7. 28. 38. 25. PR=1.3 PR13 (PR=1.3 041 CI95%=1.041.73 CI9510417 CI95104 CI95%=1.0 173 1.7 CI95%=1.04-1.73 PR=1.1 PR11 (PR=1.1 001 CI95%=1.001.26 CI9510012 CI95100 126 1.2 CI95%=1.00-1.26 021 CI95%=1.021.4 CI9510214 CI95102 140 1.4 CI95%=1.02-1.4 (CI9 6 PR=1. PR1 (PR=1. CI95%=1.041.7 CI951041 CI9510 CI95%=1. 17 1. CI95%=1.04-1.7 CI95%=1.001.2 CI951001 CI95%=1.00-1.2 CI95%=1.021. CI951021 14 CI95%=1.02-1. (CI PR=1 (PR=1 CI95%=1.041. CI951 CI95%=1 CI95%=1.04-1. CI95%=1.001. CI95%=1.00-1. CI95%=1.021 CI95%=1.02-1 PR= (PR= CI95%=1.041 CI95%= CI95%=1.04-1 CI95%=1.001 CI95%=1.00-1 CI95%=1.02- CI95%=1.04- CI95%=1.00-