Table 2.

Comparison between cases and controls regarding leptin level

	Group 1	Group 2	p value
Preoperative leptin level, ng/ml	19.25 (1.50–109.60)	0.90 (0.50–11.80)	<0.001*
Postoperative leptin level, ng/ml	0.90 (0.60–8.90)	0.80 (0.50–10.80)	0.532
p value	<0.001*	0.274

* Statistically significant