BioMed Research International / 2017 / Article / Fig 3

Clinical Study

Endotracheal Intubation Using a Direct Laryngoscope and the Protective Performances of Respirators: A Randomized Trial

Figure 3

Fit factors and success rates of 3 types of N95 or higher respirators with and without intubation using direct laryngoscopes. Fit factor of valve type was decreased during intubation. Percentage of fit factor greater than or equal to 100 of cup type and valve type was decreased during intubation. * means an extreme value which is more than 3 times the upper and least value. ∘ means an outlier value which is more than 3/2 times the upper and least value.