Table 5.

Comparison of safety index between two groups ($\overline{x}\pm s$).

Group	Time	AST	ALT	CK	Cr
Experimental group (n = 164)	Before intervention	29.63 ± 5.62	29.38 ± 6.20	82.04 ± 5.97	80.48 ± 6.84
	After intervention	29.92 ± 5.52	29.84 ± 5.54	82.61 ± 7.03	81.94 ± 7.05a
	t	2.458	3.071	1.837	4.972
	P	0.86	0.79	0.88	0.24
Control group (n = 148)	Before intervention	29.27 ± 5.21	30.04 ± 4.97	79.83 ± 6.38	80.03 ± 5.97
	After intervention	29.67 ± 4.97	30.64 ± 6.48	79.46 ± 6.58	81.31 ± 4.39
	t	1.278	2.131	1.921	4.549
	P	0.63	0.45	0.83	0.19

Note: compared with the control group, P < 0.05∗. AST: aspartate aminotransferase; ALT: alanine aminotransferase; CK: creatine kinase; Cr: creatinine.