Fig. 1From: Abnormal placental perfusion and the risk of stillbirth: a hospital-based retrospective cohort studyCumulative risk of stillbirth (all and unexplained) across the groups by the number of placental perfusion insufficiency markers*. * APP NA, placental perfusion insufficiency data not available, P values for the log-rank (Mantel-Cox) method compared with the cumulative risk of stillbirth in the group without APP exposureBack to article page