. Author manuscript; available in PMC: 2016 Jul 1.

Published in final edited form as: Surg Obes Relat Dis. 2014 Nov 13;11(4):897–905. doi: 10.1016/j.soard.2014.10.026

Table 5.

Percentage weight change by whether participants had postoperative (first three years) addictive behaviors

	Percentage weight change by additive behavior				p-(quartiles)
	No		Yes
	n	Median (quartiles)	n	Median(quartiles)
Any Addictive Behavior Disorder-SCID criteria	167	−30.7 (−38.0,−25.4)	34	−30.3 (−36.4,−26.7)	0.94
Alcohol Use Disorder-SCID criteria	185	−30.7 (−38.0,−25.4)	16	−29.6 (−36.6,−25.9)	0.59
Alcohol Use Disorder- SCID/AUDIT criteria	142	−31.7 (−38.8,−26.1)	34	−29.9 (−34.4,−26.7)	0.44
Non-Substance Use Addictive Disorder	182	−30.7 (−37.9,−25.4)	19	−30.0 (−36.4,−26.7)	0.71
Impulsive/Compulsive Buying	187	−30.7 (−37.7,−25.2)	14	−32.4 (−42.3,−27.6)	0.30

RYGB=Roux-en-Y Gastric Bypass; SCID= Structured Clinical Interview for DSM-IV; AUDIT=Alcohol Use Disorder Identification Test.

These analyses had 80% power to detect a difference in % weight loss of 7–8%, i.e., the analysis was underpowered to detect a real difference smaller than this amount.