[Retracted] Analysis of the Effects of Humidified High Flow Nasal Oxygen Therapy Combined with Noninvasive Mechanical Ventilation on Treatment Outcomes

Table 5

Comparison of incidence of complications between the two groups [n (%)].

Group	n	Obstruction of expectoration	Aspiration	Nasal injury	Dry mouth and nasopharynx	Total adverse events
Research group	50	2 (4.00)	1 (2.00)	1 (2.00)	0 (0.00)	4 (8.00)
Control group	50	4 (8.00)	2 (4.00)	3 (6.00)	3 (6.00)	12 (24.00)
χ^2						4.762
						0.029