Table VI.

Comparison of procalcitonin (PCT) levels in patients between the two groups in different time (ng/ml).

Group	n	Before treatment	3 days	5 days	7 days	F-value	P-value
Observation group	45	5.89±3.23	3.32±1.15	2.23±1.04	1.15±0.83	18.718	<0.001
Control group	41	3.36±3.28	2.54±1.47	1.53±0.75	0.78±0.44	27.432	<0.001
t-test		3.601	2.753	3.549	2.812
P-value		<0.001	0.007	0.001	0.005