Fig. 3From: Video laryngoscopy does not improve the intubation outcomes in emergency and critical patients – a systematic review and meta-analysis of randomized controlled trialsVL vs. DL for first-attempt success rate based on different settings (a), experience levels of operators in in-hospital settings (b), and different types of video laryngoscopy in in-hospital settings (c). VL Video laryngoscopy, DL Direct laryngoscopy, M-H Mantel-HaenszelBack to article page