Fig. 9From: Serum screening in first trimester to predict pre-eclampsia, small for gestational age and preterm delivery: systematic review and meta-analysisForest plot for hCG to predict SGA: forest Plot showing likelihood ratio of a positive and negative test result with 95Â % confidence intervals (95 % CI) for studies of Human chorionic gonadotrophin (hCG) to predict small for gestational age (SGA). * continuous: Likelihood ratio calculated from receiver operating curve analysisBack to article page