Fig. 7From: Serum screening in first trimester to predict pre-eclampsia, small for gestational age and preterm delivery: systematic review and meta-analysisForest plot for PlGF to predict preeclampsia, SGA and preterm delivery: forest Plot showing likelihood ratio of a positive and negative test result with 95Â % confidence intervals (95 % CI) for studies of Placental Growth Factor (PlGF) to predict preeclampsia, small for gestational age (SGA) and preterm delivery. * continous: Likelihood ratio calculated from receiver operating curve analysisBack to article page