Interleukin-6 associations with survival in low-risk pulmonary arterial hypertension clinical features
| Univariable hazard ratio (95% CI) | p-value | |
| NT-proBNP <300 ng·mL−1 | 1.41 (1.08–1.83) | 0.011 |
| 6MWD >440 m | 1.43 (1.29–1.58) | <0.001 |
| RAP <8 mmHg | 1.43 (1.26–1.62) | <0.001 |
| Cardiac index >2.5 L·min−1·m−2 | 1.36 (1.23–1.52) | <0.001 |
NT-proBNP: N-terminal pro-brain natriuretic peptide; 6MWD: 6-min walk distance; RAP: right atrial pressure.