Cox regression after variable selection procedure
| Variable | Hazard ratio (95% CI) | p-value |
| ProANP | 1.91 (1.03–3.53) | 0.039 |
| hsTnT | 1.41 (0.88–2.26) | 0.153 |
| RV impairment | 1.30 (0.94–1.80) | 0.107 |
| 6-min walk test | 0.97 (0.94–1.01) | 0.110 |
ProANP: pro-atrial natriuretic peptide; hsTnT: high-sensitivity troponin T; RV: right ventricular.