Psychometric properties of the German version of the Eating Pathology Symptoms Inventory

Table 2 Descriptive statistics (M, SD) and internal consistencies (ω) of other measures and their correlations (r_pb) with EPSI scales in study 1

	n	M (SD)	ω	Body Dissatisfaction	Binge Eating	Cognitive Restraint	Purging	Restricting	Excessive Exercise	Negative Attitudes Toward Obesity	Muscle Building
Eating Disorder Examination–Questionnaire
Global score	354	1.67 (1.40)	0.97	0.80	0.51	0.65	0.55	0.36	0.35	0.17	0.17
Binge eating (number of days)	348	1.93 (3.99)	—	0.44	0.64	0.31	0.31	0.10	0.16	0.10	0.17
Self-induced vomiting (number of times)	347	0.42 (2.10)	—	0.31	0.21	0.34	0.49	0.32	0.22	0.05	0.02
Use of laxatives (number of times)	346	0.11 (0.91)	—	0.21	0.09	0.19	0.34	0.19	0.14	0.02	0.02
Excessive exercise (number of times)	347	1.73 (4.17)	—	0.31	0.24	0.43	0.30	0.17	0.55	0.14	0.35
Body Shape Questionnaire–8	344	2.51 (1.25)	0.96	0.82	0.56	0.59	0.56	0.32	0.29	0.17	0.13
Depression, Anxiety and Stress Scale–21
Depression	356	0.89 (0.74)	0.95	0.46	0.30	0.24	0.33	0.47	0.11	0.13	0.07
Anxiety	356	0.72 (0.62)	0.86	0.41	0.32	0.24	0.26	0.35	0.07	0.13	0.09
Stress	356	1.03 (0.66)	0.90	0.46	0.37	0.26	0.27	0.39	0.09	0.10	0.03

Notes. All correlation coefficients > 0.15 are statistically significant at p <.005 (printed in bold). Note that percentage bend correlation coefficients could not be computed for self-induced vomiting and use of laxatives due to the small number of persons reporting these behaviors. Therefore, these variables were dichotomized into no vomiting/no use of laxatives versus self-induced vomiting/use of laxatives at least once in the past 28 days and rank-biserial correlation coefficients were computed. Note that—as other correlation coefficients—percentage bend and rank-biserial correlation coefficients can range between −1 and 1. Thus, their sizes may be interpreted as small (0.1–0.3), medium (0.3–0.5), or large (≥ 0.5), similar to what has been suggested for Pearson’s r [55]

ISSN: 2050-2974