Fig. 1. Receiver operating characteristic curves for each (A) non-invasive and (B) invasive parameter for predicting subsequent histologic chorioamnionitis [gestational age: area under the curve (AUC)=0.734, SE=0.042, p<0.001; serum C-reactive protein (CRP): AUC=0.617, SE=0.048, p<0.015; maternal blood white blood cell (WBC): AUC=0.640, SE=0.046, p=0.003; amniotic fluid (AF) WBC: AUC=0.702, SE=0.044, p<0.001; AF interleukin-6 (IL-6): AUC=0.743, SE=0.041, p<0.001]. SE, standard error.
