Key PointsQuestionIs chorioamnionitis a risk factor for developing bronchopulmonary dysplasia in preterm infants?FindingsThis systematic review, meta-analysis, and metaregression found that chorioamnionitis was associated with an increased risk of bronchopulmonary dysplasia in preterm infants but also found significant differences in baseline characteristics between infants with and infants without chorioamnionitis. A multivariate metaregression model combining the difference in gestational age and the odds of respiratory distress syndrome was associated with 64% of the variance in the association between chorioamnionitis and bronchopulmonary dysplasia.MeaningExposure to chorioamnionitis is associated with a higher risk of developing bronchopulmonary dysplasia in preterm infants, but this association may be modulated by gestational age and risk of respiratory distress syndrome.