The etiologies and some risk factors for pregnancy loss in the 2nd trimester are described in the literature. However, there are some risk factors that are not studied. The PEGREP study is a retrospective observational case-control study whose main objective is to identify risk factors for pregnancy loss between 15 and 22 weeks. The patients included cases are women who had a pregnancy loss between 15 and 22 SA between 2010 and 2015 and who were listed during the mortality reviews of the perinatal network of Western Brittany. The patient witnesses gave birth at the end of a healthy child in one of the maternity of Western Brittany. Matching 1 case for 1 controls was done on the woman's age, parity and number of fetuses.
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maternal history
Timeframe: at the time of diagnosis of fetal loss (Day1)
criteria of the pregnancy concerned by the fetal loss
Timeframe: at the time of diagnosis of fetal loss ( Day 1)