NPPB and lung disorder: Underlying lung disease, age > 65, old criteria for severe PH, new criteria for severe PH (PVR > 5 WU), b-type natriuretic peptide (BNP) > 200 pg/mL, forced expiratory volume in 1 s (FEV1), functional vital capacity (FVC), and 6MWD were significantly associated with one-year mortality in univariate analysis and utilized in multivariable analysis.