Table 5.

Comparison of infection indexes before and after oxygen therapy between two groups

Group	CRP (mg/L)		PCT (ng/mL)		WBC (×109/L)		L (×109/L)
	Before the application	After the application	Before the application	After the application	Before the application	After the application	Before the application	After the application
HFNC	50.18 ± 13.06	15.20 ± 2.93	0.08 ± 0.02	0.07 ± 0.01	5.34 ± 0.74	6.14 ± 0.95	0.80 ± 0.08	1.17 ± 0.08
COT	49.6 ± 8.00	40.30 ± 11.82	0.07 ± 0.02	0.08 ± 0.02	6.74 ± 1.01	7.10 ± 0.78	0.75 ± 0.13	0.94 ± 0.07
T value	0.037	−2.238	0.434	−0.636	−1.108	−0.734	0.359	2.158
P value	.971	.037	.669	.532	.281	.471	.723	.043