NPPB and congestive heart failure: In the univariate analysis for BNP the HR was 3.83 (95% CI, 2.05-7.15), p = 0.000, and in a stepwise multivariable Cox regression model, the HR was 2.12 (95% CI, 1.07-4.18), p = 0.031, remaining significant when age, CHF and CHD were added.