title: The Eating Disorder Diagnostic Scale: psychometric features within a clinical population and a cut-off point to differentiate clinical patients from healthy controls.
abstract: The Eating Disorder Diagnostic Scale (EDDS) is a brief self-report measure for diagnosing anorexia nervosa, bulimia nervosa and binge eating disorder. Research has provided evidence of the reliability and validity of this scale in non-clinical populations. Our study is the first to examine the psychometric features of the EDDS in a clinical population of eating disordered patients. We identified a cut-off point that differentiates clinical patients from healthy controls. A clinical group of 59 Dutch female eating disordered patients and a control group of 45 Dutch students completed the EDDS, the Eating Disorder Examination Interview, the Body Attitude Test and the Beck Depression Inventory--II. The EDDS showed good test-retest reliability, internal consistency, criterion validity and convergent validity with other scales assessing eating and general pathology. An overall symptom composite cut-off score of 16.5 accurately distinguished clinical patients from healthy controls. The EDDS may be a useful instrument in clinical settings and in aetiologic, prevention and treatment research.
authors.affiliation: Behavioural Science Institute, Radboud University Nijmegen, The Netherlands. mkrabbenborg@yahoo.com
authors.forename: Manon A M
authors.initials: MA
authors.lastname: Krabbenborg
authors.forename: Unna N
authors.initials: UN
authors.lastname: Danner
authors.forename: Junilla K
authors.initials: JK
authors.lastname: Larsen
authors.forename: Nienke
authors.initials: N
authors.lastname: van der Veer
authors.forename: Annemarie A
authors.initials: AA
authors.lastname: van Elburg
authors.forename: Denise T D
authors.initials: DT
authors.lastname: de Ridder
authors.forename: Catharine
authors.initials: C
authors.lastname: Evers
authors.forename: Eric
authors.initials: E
authors.lastname: Stice
authors.forename: Rutger C M E
authors.initials: RC
authors.lastname: Engels
mesh_terms: D000856:Anorexia Nervosa / Q000175:diagnosis / Q000523:psychology; D056912:Binge-Eating Disorder / Q000175:diagnosis / Q000523:psychology; D001828:Body Image; D052018:Bulimia Nervosa / Q000175:diagnosis / Q000523:psychology; D001068:Feeding and Eating Disorders / Q000175:diagnosis* / Q000523:psychology; D005260:Female; D006801:Humans; D011569:Psychiatric Status Rating Scales / Q000592:standards; D011594:Psychometrics; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D055815:Young Adult