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. 2022 Mar 24;102:103751. doi: 10.1016/j.apergo.2022.103751

Table 8.

Level of confidence in mask seal.

What is your level of confidence in the seal of the mask to avoid leakage according to the facial areas designated? (1: Not confident at all; 2: Slightly confident; 3: Somewhat confident; 4: Fairly confident; 5: Completely confident)
MNmask v1
MNmask v2
KN95
F
Mean (S.D.) Mean (S.D.) Mean (S.D.)
Nose bridge 3.14 (1.22) 2.68 (1.28) 3.07 (1.25) 1.079
Cheekbones 3.79 (0.94) 3.21 (1.24) 3.36 (1.23) 1.826
Breathing zone 3.64 (0.97) 3.29 (0.96) 3.43 (1.27) 0.756
Under chin 3.71 (0.96) 3.50 (0.98) 3.32 (1.39) 0.821
Outer cheeks 3.96 (0.87) 3.57 (1.12) 3.50 (1.24) 1.434
Overall 3.46 (0.98) 3.32 (0.97) 3.07 (1.31) 0.889