Table V.

Comparison of TNF-α levels between the two groups of patients after treatment (pg/ml, x±s).

Groups	n	At 1 week after operation	At 4 weeks after operation	At 4 weeks after operation
Observation group	47	59.67±3.23	32.35±3.28	23.68±3.24
Control group	47	67.27±3.64	49.47±3.36	32.83±3.78
t-test		10.707	24.996	12.600
P-value		<0.001	<0.001	<0.001

TNF-α, tumor necrosis factor-α.