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Aim
A cohort study was performed to clarify the influence of risk factors on perinatal events (obstetric complications and/or perinatal deaths).
Methods
This cohort study reviewed 395 785 births from 2011 to 2013. Women with singleton pregnancies delivered after 22 weeks of gestation were included. The OR were determined on multivariate analysis. The perinatal event score (PES) for risk factors,...