NPPB and hydrops fetalis: Adding NT-proBNP, EF, and LVMI as continuous variables to the base clinical models improved discrimination: 14-year HF (C-statistic [95% CI] 0.802 [0.752, 0.852] vs. 0.772 [0.718, 0.825], P = .016), HFrEF (0.839 [0.773, 0.906] vs. 0.752 [0.658, 0.846], P = .001), and HFpEF (0.787 [0.674, 0.900] vs. 0.771 [0.656, 0.886], P = .15) (see Supplementary data online, Table S13).