New and old predictive factors for breech presentation: our experience in 14\u2009433 singleton pregnancies and a literature review.

OBJECTIVE: Breech presentation represents a common indication for primary cesarean section in women presenting for parturition. This study aims to investigate the presence of new and old risk factors for breech presentation and to provide a literature review. METHOD: In this population-based retrospective cohort study, we collected data from 14,433 consecutive singleton deliveries occurred in a 3rd level hospital setting of northeast Italy between January 2001 and July 2009. Related risk factors and trends in breech presentation prevalence were also considered. RESULTS: Mean maternal age was 31.78 years (\ub15.17) and mean gestational age at delivery 38.67 weeks (\ub12.54). Breech presentation prevalence in nullipara and pluripara was respectively 5.36% (415/7743) and 3.53% (236/6689; p<0.05), and was significantly lower among Sub-Saharan-African women 2.62% (14/535) versus 4.51% (651/14432; p