Fig. 6

The interrater reliability of the assessment tool for intubation using optical stylets. The interrater reliability concerning the total scores based on 44 video recordings was good, Pearson’s r = 0.94. Reliability was highest for optimized intubation condition, Pearson’s r = 0.90, and the anatomical identification, Pearson’s r = 0.84, somewhat lower concerning hand-eye coordination, Pearson’s r = 0.79