Survival curves generated by Kaplan-Meier survival analysis, representing primary and secondary clinical outcomes. (a) Duration of mechanical ventilation. (b) Duration of ICU stay. The sole reason for censoring was that three patients in each group died before completing the study (on days 14, 23, and 23 in the control group and on days 19, 21, and 21 in the study group). One patient in the control group died on day 23 but was extubated on day 22. Cum, cumulative.