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Recurrent preterm birth: data from the study "Birth in Brazil"
Barbara Almeida Soares Dias1, Maria do Carmo Leal2, Katrini Guidolini Martinelli3
1Fundação Oswaldo Cruz. Escola Nacional de Saúde Pública. Pós-Graduação em Epidemiologia em Saúde Pública. Rio de Janeiro, RJ, Brasil.
Revista De Saude Publica
|March 16, 2022
Summary
Previous preterm birth significantly increases the risk of recurrence. Improved monitoring and management of pregnant women with prior preterm births are crucial for reducing infant morbidity and mortality in Brazil.
Area of Science:
- Obstetrics and Gynecology
- Public Health
- Perinatal Epidemiology
Background:
- Preterm birth is a leading cause of infant mortality.
- Understanding recurrence rates is vital for targeted interventions.
Purpose of the Study:
- To describe and estimate the rate of recurrent preterm birth in Brazil.
- To analyze recurrence based on delivery type and associated factors.
Main Methods:
- Utilized data from the 'Birth in Brazil' national study (2011-2012).
- Employed propensity score matching to balance covariates.
- Performed multiple logistic regression to estimate recurrence odds.
Main Results:
- Recurrence rate was 42.0% among women with previous preterm birth.
- Spontaneous births constituted 62.2% of recurrent preterm births.
- Previous preterm birth increased odds of spontaneous (OR=3.89) and provider-initiated (OR=3.47) recurrence.
Conclusions:
- Previous preterm birth is a strong predictor of recurrence.
- Enhanced monitoring and management of high-risk pregnancies can reduce rates.
- Reducing preterm birth recurrence lowers infant morbidity and mortality risks.
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