Table 3.

Effect of chest compressions on mask fit.

Mask type	Time point	Passed (n)	Not Passed (n)	Passing rate (%)	p value
D918	Before CC	53	1	98.15%	< 0.001# 0.043※ 0.001*
	During CC	30	24	55.56%
	After CC	38	16	70.37%
	Total	130	32
D920	Before CC	52	2	96.30%	0.480#
	CC	50	4	92.59%	0.617※
	After CC	52	2	96.30%	0.480*
	Total	154	8

# Comparison between Before CC and During CC. ※Comparison During CC and After CC. *Comparison between Before CC and After CC.