Procedure	Weight loss (%)
	Two-year follow-up	10-year follow-up
Gastric bypass	32 ± 8	25 ± 11
Vertical banded gastroplasty	25 ± 9	16 ± 11
Gastric banding	20 ± 10	14 ± 14
Nonsurgical treatment	0 ± 2	0 ± 2