Skip to main content
Figure 2 | BMC Research Notes

Figure 2

From: Long-term survival of patients with pulmonary arterial hypertension recovering to World Health Organization functional class I or II: a historical comparison between intravenous epoprostenol and oral agents

Figure 2

Kaplan–Meier survival curves for patients from the day of their first visit to a medical facility. The patients were divided into 4 groups: Group 1: intravenous epoprostenol and recovery to WHO-FC I or II; Group 2: intravenous epoprostenol, but failure to recover to WHO-FC I or II; Group 3: no intravenous epoprostenol, but recovery to WHO-FC I or II; and Group 4: no intravenous epoprostenol and failure to recover to WHO-FC I or II. Cox proportional hazard analysis gave a hazard ratio for death compared to recovery to WHO-FC II or better of 0.07 (95% confidence interval: 0.02 to 0.26, P < 0.001). Use of intravenous epoprostenol had no significant influence on survival (p = 0.96).

Back to article page

BMC Research Notes

ISSN: 1756-0500

Contact us