NPPB and hydrops fetalis: For multivariable regression analysis in model 3, variables (age, gender, medical history, HF device-therapies, medications, clinical status, laboratory variables and echo data) were entered into the univariate regression analysis, and variables with P < 0.10 [age, HbA1c-SD (high or low), eGFR, beta-blockers, BNP (tertiles), ischemic HF, NYHA, E/e′ and LVEF (≥ 50, 40–49, < 40%)] and forced inclusion variables (gender, HbA1c-mean, baseline HbA1c, number of HbA1c measurements) were further entered into the multivariable Cox regression model.