Fig. 2From: Possibility of live birth in patients with low serum β-hCG 14 days after blastocyst transferROC curves for predicting pregnancy outcomes by fold increases in serum β-hCG levels over 48 h. a: ROC curve of the β-hCG fold increase for clinical pregnancies; b: ROC curve analysis of a β-hCG fold increase for live birthsBack to article page