| Predicted survival* | ||
---|---|---|---|
Treatment | Year 1 | Year 2 | Year 3 |
Placebo | 0.719 | 0.600 | 0.504 |
Bosentan | 0.778 | 0.677 | 0.593 |
Sitaxentan | Â | Â | Â |
   100 mg | 0.758 | 0.651 | 0.562 |
   300 mg | 0.757 | 0.649 | 0.560 |
Sildenafil | Â | Â | Â |
   20 mg | 0.752 | 0.642 | 0.552 |
   40 mg | 0.756 | 0.648 | 0.559 |
   80 mg | 0.771 | 0.668 | 0.583 |
Epoprostenol | 0.784 | 0.686 | 0.603 |
Beraprost | 0.741 | 0.629 | 0.537 |
Treprostinil | 0.761 | 0.655 | 0.567 |