Figure 2

Kaplan–Meier curves indicating the time lag from intubation to IMV discontinuation. The Kaplan–Meier curve showing median and interquartile range are depicted: red line represents early extubation group while turquoise line refers to standard weaning group; P values refer to Log-Rank test. Kaplan–Meier curve constructed without (a) or with adjusting for propensity score (b).