Figure 1From: High frequency oscillatory ventilation compared with conventional mechanical ventilation in adult respiratory distress syndrome: a randomized controlled trial [ISRCTN24242669]Cumulative mortality incidence for high frequency oscillatory ventilation (HFOV) versus conventional mechanical ventilation (CV). Curves are estimates of cumulative risk corrected for study site, baseline oxygenation index and ventilatory index, APACHE II score, age and weight.Back to article page