Table 2 Multivariate Cox proportional hazards model for predicting mortality in medically treated CTEPH patients
From: Risk prediction in medically treated chronic thromboembolic pulmonary hypertension
| Â | Hazard ratio | 95% Confidence interval | P value | Score |
|---|---|---|---|---|
The Swedish/COMPERA risk stratum | ||||
Low risk | – | – | – | 0 |
Intermediate risk | 2.816 | 1.206–6.575 | 0.017 |  + 3 |
High risk | 5.889 | 2.097–16.542 | < 0.001 |  + 6 |
Pulmonary vascular resistance | ||||
 ≤ 1600 dyn·s/cm5 | – | – | – | 0 |
 > 1600 dyn·s/cm5 | 2.458 | 1.562–3.869 | < 0.001 |  + 3 |
Total bilirubin | ||||
 ≤ 38 µmol/L | – | – | – | 0 |
 > 38 µmol/L | 2.288 | 1.392–3.763 | 0.001 |  + 2 |
Chronic kidney disease | ||||
No | – | – | – | 0 |
Yes | 1.671 | 1.067–2.617 | 0.025 |  + 2 |