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Determinants of preterm birth: Pelotas, Rio Grande do Sul State, Brazil, 2004 birth cohort

Mariângela F Silveira1, Cesar G Victora, Aluísio J D Barros

  • 1Universidade Federal de Pelotas, Brasil. maris.sul@terra.com.br

Cadernos De Saude Publica
|March 9, 2010
PubMed

Insights

Prematurity is a major cause of newborn deaths globally. This study found that risk factors for preterm birth, such as poverty and inadequate prenatal care, did not significantly differ across socioeconomic groups in Brazil.

Area of Science:

  • Public Health
  • Obstetrics
  • Neonatology

Background:

  • Prematurity represents a significant global health challenge, contributing substantially to neonatal mortality worldwide.
  • Understanding the diverse risk factors associated with preterm birth is crucial for developing targeted interventions, particularly across different socioeconomic strata.

Purpose of the Study:

  • To investigate whether risk factors for preterm birth differ across various socioeconomic groups.
  • To test the hypothesis that distinct risk factors influence preterm deliveries in different income strata within the Pelotas birth cohort.

Main Methods:

  • Analysis of the 2004 Pelotas (Brazil) birth cohort, including 4,142 women.
  • Multivariate analysis to identify significant risk factors for preterm birth.
  • Stratified analysis by family income terciles to assess effect modification by socioeconomic status.

Main Results:

  • Significant risk factors for preterm birth included black skin color, low education, poverty, young maternal age, primiparity, prior preterm birth, inadequate prenatal care, and hypertension.
  • No significant evidence of effect modification by family income was observed; risk factors were consistent across socioeconomic groups.
  • Cesarean section was not found to be associated with preterm delivery.

Conclusions:

  • The identified risk factors for preterm birth were consistent across different socioeconomic groups in the studied Brazilian population.
  • Further research is needed to elucidate the underlying causes of the increasing rates of preterm birth in Brazil.

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