Table III.

Changes in serum levels of ghrelin relative to changes in patient's appetite after the surgery

Group of patients	Ghrelin level [ng/l]
	Pre-operative examination	6 months post-operative	12 months post-operative
Patients with decrease of appetite (n = 18)	131.8 ±94.2	51.8 ±30.9b	72.8 ±46.8NS
Patients without change of appetite (n = 18)	140.5 ±119.4	52.4 ±41.9c	96.2 ±63.1NS
Patient with increase of appetite (n = 1)	93.9	86.2	173.5

^aComparison with pre-operative examination p < 0.001

^bComparison with pre-operative examination p < 0.01

^cComparison with pre-operative examination p < 0.05

^NSComparison with pre-operative examination p > 0.05