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Updated: Jan 24, 2026

A Novel Method for Involving Women of Color at High Risk for Preterm Birth in Research Priority Setting
Published on: January 12, 2018
Maternal characteristics of preterm singleton birth following assisted reproduction: a population-based study
Katja Razem1, Nataša Tul1, Ivan Verdenik1
1Division of Obstetrics and Gynecology, Department of Perinatology, University Medical Centre Ljubljana, Ljubljana, Slovenia.
Objective:
To identify pregestational maternal characteristics that are associated with an increased risk for preterm births (PTB) of assisted reproductive technology (ART) singleton pregnancies.
Patients And Methods:
We evaluated the Slovenian National Perinatal Information System (NPIS). We included all ART singletons born during the period 2006-2015. We compared births before and after 36 completed weeks' gestation for maternal age, parity, prepregnancy BMI, height, previous PTB, preexisting hypertension and diabetes, and history of uterine gynecological operations.
Results:
Chronic hypertension (OR 2.5, 95% CI 1.3-4.8), previous preterm birth (OR 2.4, 95% CI 1.5-3.7), pregravid obesity (OR 1.6, 95% CI 1.2-2.1) and an existing indication for cerclage (OR 6.2, 95% CI 3.7-10.5) were associated with an increased risk of PTB.
Conclusions:
Chronic hypertension, previous PTB, pregravid obesity and an existing indication for cerclage are associated with increased risk of PTB among ART pregnancies.
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