Figure 1From: Comparison of the McGrath® Series 5 and GlideScope® Ranger with the Macintosh laryngoscope by paramedicsGraphs representing the time until first ventilation for the Macintosh, the McGrath® and the GlideScope® laryngoscopes for all six attempts in a normal airway. Mean ± SD. * = p < 0.05, ** = p < 0.01, *** = p < 0.001.Back to article page