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Figure 3 | BMC Research Notes

Figure 3

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 3

Kaplan-Meier estimates of survival time from the start of intravenous epoprostenol or the last increase of oral medication. 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 0.15 (95% confidence interval: 0.05 to 0.44, P < 0.001). Use of intravenous epoprostenol had no significant influence on survival (p = 0.33).

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BMC Research Notes

ISSN: 1756-0500

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