Treatment allocation by risk group at baseline and at follow-up (%)
| Risk group | |||
| Low | Intermediate | High | |
| IPAH/CTD-PAH | IPAH/CTD-PAH | IPAH/CTD-PAH | |
| Baseline | 12/19 | 68/69 | 20/12 |
| Single therapy | 77/78 | 66/73 | 52/33 |
| Combination therapy | 9/5 | 20/15 | 32/67 |
| Follow-up | 43/28 | 52/67 | 5/5 |
| Single therapy | 41/56 | 38/38 | 20/14 |
| Combination therapy | 43/33 | 53/57 | 80/86 |
Missing values accounting for up to 100% in the different categories represent patients without a recorded treatment. Deceased patients were excluded from this analysis. IPAH: idiopathic/hereditary pulmonary arterial hypertension; CTD-PAH: connective tissue disease-associated pulmonary arterial hypertension.