Objective: Identifying factors associated to Caesarean sections among the residents of Maringá-PR, according to the financing source for delivery.

Methods: A cross-sectional study with data from 920 postpartum women interviewed between October 2013 and February 2014. Association analysis was performed by logistic regression.

Results: Caesarean section rates were 55.5% in the Unified Healthcare System (SUS) and 93.8% in the private system. Factors associated with Caesarean section in the SUS were: previous Caesarean section (OR=8.9; CI=4.6-16.9), desire for Caesarean section early in pregnancy (OR=2.0; CI=1.1-3.6), pregestational overweight/obesity (OR=1.8; CI=1.1-2.8), and per capita family income higher than one minimum wage (OR=2.1; CI=1.3-3.4). In the private system, desire for Caesarean section early in pregnancy (OR=25.3) and a previous Caesarean section (OR=11.3) were strongly associated to its performance.

Conclusion: It is necessary to properly orientate all pregnant women who desire a Caesarean delivery, from both the SUS and the private system, about the inherent risks of the surgical procedure without indication. In the public health sector, guidelines should be focused on pregnant women with previous Caesarean delivery, with a per capita income higher than one minimum wage and those who are overweight or obese, as these women are more likely to have a Caesarean section.

Objetivo: Identificar fatores associados à cesárea entre residentes de Maringá-PR, segundo a fonte de financiamento do parto.

MÉtodo: Estudo transversal com dados de 920 puérperas entrevistadas entre outubro de 2013 e fevereiro de 2014. A análise de associação foi feita por regressão logística.

Resultados: A taxa de cesariana foi de 55,5% e 93,8% no Sistema Único de Saúde (SUS) e no sistema privado, respectivamente. Associou-se à cesárea no SUS: realização de cesárea anterior (OR=8,9; IC=4,6-16,9), desejo pela cesárea no início da gestação (OR=2,0; IC=1,1-3,6), sobrepeso/obesidade pré-gestacional (OR=1,8; IC=1,1-2,8), e renda familiar per capita maior que um salário mínimo (OR=2,1; IC=1,3-3,4). No sistema privado, o desejo pela cesárea no início da gestação (OR=25,3) e uma cesárea anterior (OR=11,3) estiveram fortemente associados à sua realização.

ConclusÃo: É necessário orientar adequadamente todas as gestantes que desejam o parto cesárea, no SUS e no sistema privado, sobre os riscos inerentes ao procedimento cirúrgico sem indicação. No setor público de saúde, devem ser foco das orientações as gestantes com parto cesárea anterior, as com renda familiar per capita maior que um salário mínimo e com sobrepeso ou obesidade, as quais têm mais chances de realizar cesárea.

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