Table 6.

Comparison of serum TGF-β1 and Smad2 expression levels

Index	Control group (n=53)	Research group (n=53)	t	P
TGF-β1 (ug/L)
Before treatment	8.63±1.06	8.59±1.03	0.197	0.844
After treatment	8.57±0.85	6.37±0.71***	14.461	0.001
Smad2 (ng/L)
Before treatment	863.64±95.22	871.58±96.57	0.426	0.671
After treatment	854.16±90.63	675.64±81.22***	10.679	0.001

Note: Compared in the same group before and after treatment;

^***P<0.001.

TGF-β1: transforming growth factor-β1.