Table II.

Comparison of leptin levels between the treatment group and the control group before treatment, at 2 weeks, 3 months and 6 months after treatment.

Group	Leptin (µg/l)
Control group (n=25)	9.26±2.89
Treatment group (n=28)
Before treatment	29.78±5.95
After treatment
2 weeks	20.81±3.41
3 months	13.17±2.57
6 months	10.08±1.26

i) Compared with the same group before treatment, P<0.01; ii) compared with the control group before treatment, P<0.01; iii) compared with the control group 6 months after treatment, P>0.05