Table 3.

Comparison of inflammatory factors between the two groups of preterm infants (x̅ ± sd)

Groups	Control group (n=47)	Research group (n=47)	t	P
TNF-α (μg/mL)
Before treatment	16.47±4.36	16.50±4.31	0.034	0.973
After treatment	11.98±3.74	8.36±3.04	5.149	<0.001
t	5.359	10.581
P	<0.001	<0.001
IL-6 (μg/mL)
Before treatment	14.71±3.46	14.93±3.52	0.306	0.760
After treatment	10.05±2.63	6.08±2.53	7.458	<0.001
t	7.351	13.996
P	<0.001	<0.001
IL-8 (pg/mL)
Before treatment	15.04±3.35	15.50±3.51	0.650	0.517
After treatment	10.18±2.44	6.58±2.63	6.880	<0.001
t	8.039	13.943
P	<0.001	<0.001

Note: IL-6: interleukin-6; IL-8: interleukin-8; TNF-α: tumor necrosis factor.