Fig. 2From: A randomized controlled proof-of-concept trial of early sedation management using Responsiveness Index monitoring in mechanically ventilated critically ill patientsKaplan-Meier curve illustrating the numbers of patients in each trial group (36 in the intervention and 38 in the control group) requiring mechanical ventilation over the 48-hour intervention period. Log-rank test: P = 0.33Back to article page