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Maternal markers alone or in combination predict the ROC curve of fetal growth restriction. (A) The ROC curves for PAPP-A MoM, free β-hCG MoM, or NT MoM, respectively. (B) ROC curves for combined prediction models of various associated PAPP-A, free β-hCG or NT. ROC, receiver operating characteristic; PAPP-A, pregnancy-associated plasma protein A; Free β-hCG, free beta subunit of human chorionic gonadotropin; NT, nuchal translucency; MoM, multiple of median.
