Augmentation of curved tip of left-sided double-lumen tubes to reduce right bronchial misplacement: A randomized controlled trial - Fig 3

Mean time (A) and number of attempts (B) for intubation of left-sided double-lumen tubes in patients with each grade of laryngoscopic view. Error bars are standard deviations. P values were obtained by comparing the intubation time between groups using unpaired t-tests (A) and by comparing the number of intubation attempts using Fisher’s exact tests (B).