. Author manuscript; available in PMC: 2011 May 1.

Published in final edited form as: Int J Eat Disord. 2010 May;43(4):337–343. doi: 10.1002/eat.20694

Table 2.

Comparison of True Positive Cases and False Positive Cases on Number of Days with Binge Eating or Overeating Episodes, Body Mass Index (BMI), and Self-Rated Health

	True Positive Mean (SD) N=48	False Positive Mean (SD) N=211	t(df)	p-value	Cohen's d
OBE	11.67 (7.88)	0.42 (1.46)	t(257) = 19.43	< .0001	1.99
SBE	5.70 (7.54)	4.02 (6.62)	t(255) = 1.52	.13	.24
OO	0.96 (3.34)	0.76 (2.54)	t(256) = 0.46	.65	.07
BMI	31.76 (8.84)	31.92 (7.85)	t(253) = −0.13	.90	−.02
Health	3.35 (1.08)	3.10 (1.05)	t(254) = 1.50	.14	.23

Note: OBE = Objective Bulimic Episode; SBE = Subjective Bulimic Episode; OO = Objective Overeating; true positive cases screened positive for a binge eating disorder (i.e., bulimia nervosa (BN), binge eating disorder (BED), or recurrent binge eating (RBE)) on the PHQ-ED and were found to meet diagnostic criteria for BN or BED or for RBE on the Eating Disorder Examination (EDE); false positive cases screened positive for a binge eating disorder on the PHQ-ED but were found to not meet diagnostic criteria for a binge eating disorder on the EDE.