NPPB and hydrops fetalis: The published results of discrimination ability described by the C-statistic for a one-year prediction of prognosis (MAGGIC with BNP/NTp-proBNP 0.736 [25], 3C-HF score 0.82–0.87 [26], BCN bio-HF calculator 0.79 [27]) or a two-year prediction of prognosis (Seatle Heart Failure Model 0.729 [28]) were comparable with our model (AUC 0.790).