A comparison of risk factors for breech presentation in preterm and term labor: a nationwide, population-based case-control study.

Purpose: To determine if the common risks for breech presentation at term labor are also eligible in preterm labor.

Methods: A Finnish cross-sectional study included 737,788 singleton births (24-42 gestational weeks) during 2004-2014. A multivariable logistic regression analysis was used to calculate the risks of breech presentation.