Table 1.

Baseline characteristics

	Weight-regain cohort (n=41)	Weight-stable cohort (n=15)	Presurgical obese control (n=133)	p Value*	p Value†
Age (years) mean±SD	49±9.5	49±11	37.6±12	1.00	<0.0001
Female (%)	93	87	81	0.49	0.08
BMI (kg/m2) mean±SD	39.7±6.8	31±5.8	47.2±7.6	<0.0001	<0.0001
Years from RYGB (years) (mean±SD)	7.0±3.8	2.2±0.9	-	<0.0001	-
Weight regain (%) mean±SD	44.7±4.8	4.5±4.8	-	<0.0001	-

*Comparison between the weight-regain cohort and weight-stable cohort.

†Comparison between the weight-regain cohort and the presurgical obese control.

BMI, body mass index; RYGB, Roux-en-Y gastric bypass.