Table 2.

Compression Rate, Depth, and Fatigue Results According to Mask Types

Mask		Compression Rate/min	Compression Depth/mm	Compression Effectiveness %	VAS
		Median (Q1/Q3)	Median (Q1/Q3)	Mean ± SD	Median (Q1/Q3)
Surgical	I	108 (105/113)	55 (53/57)	85.98 ± 3.25	5 (5/6)
FFR	II	99 (95/102)	49 (46/51)	78.85 ± 3.70	7 (7/8)
Half-face	III	95 (85/102)	43 (41/48)	68.51 ± 5.16	9 (9/10)
No-mask	IV	105 (98/112)	57 (54/59)	88.06 ± 5.77	5 (4/6)
p Value		< 0.001	< 0.001	< 0.001	< 0.001
Pairwise comparisons	I→II	< 0.001	< 0.001	< 0.001	< 0.001
	I→III	< 0.001	< 0.001	< 0.001	< 0.001
	I→IV	0.017	0.472	0.207	0.150
	II→III	0.079	0.021	< 0.001	< 0.001
	II→IV	0.003	< 0.001	< 0.001	< 0.001
	III→IV	< 0.001	< 0.001	< 0.001	< 0.001

General linear model repeated analysis of variance (Wilks' Lambda); Post hoc test: Bonferroni, Friedman test (Monte Carlo); Post hoc test: Dunn's test.

VAS = visual analogue scale; Q1 = 25^th percentile; Q3 = 75^th percentile; SD = standard deviation; FFR = filtering face-piece respirator.