Table 2. Clinical outcomes of the study subjects.

Variable	HFNC success (n=23)	HFNC failure (n=29)	P
Mortality
14-day	1 [4]	1 [3]	>0.99
28-day	3 [13]	8 [28]	0.31
60-day	3 [13]	15 [52]	0.004
ICU-free days at day 28	27.5 [24.0–28.0]	3.5 [0.5–10.0]	<0.001
Pneumothorax	2 [9]	11 [38]	0.02

Data are presented as median [interquartile range] or number [percentage] of subjects. HFNC, high flow nasal cannula.