Fig. 2From: A multicenter RCT of noninvasive ventilation in pneumonia-induced early mild acute respiratory distress syndromeKaplan-Meier estimates of the probability of the need for endotracheal intubation based on the criteria for endotracheal intubation. No difference was found for the cumulative probability for endotracheal intubation of the two groups (log-rank test: p = 0.71)Back to article page