Table 3.

Expression of GGT in serum, ($\overline{x}\pm s$)

Groups	Cases	GGT (U/L)		F	P2
		Before treatment	After treatment
The study group	76	542.79 ± 186.16	292.16 ± 91.53ab	F time = 19.149	P time < 0.001
The control group	76	552.38 ± 205.15	421.15 ± 135.76a
F		F treatment = 9.610		F time×treatment = 16.552	P time×treatment < 0.001
P1		P treatment = 0.001

^aP < 0.05 compared with the same group before treatment

^bP < 0.05 compared with the control group after treatment

P1 indicates the comparison between the study group and the control group. P2 represents the comparison between the same group before and after treatment