NPPB and bronchopulmonary dysplasia: Multivariate logistic regression analysis showed that the odds of BPD or death adjusted for gestational age increased 1.7-fold (OR = 1.7, 95% CI: 1.3; 2.3) for every one unit increase in the natural logarithm of the concentration of NT-proBNP (one unit increase in the natural logarithm is equivalent to a 2.7 multiplication of the concentration on the ordinary scale).