Validation of the Inventory of Interpersonal Problems (IIP-64): a comparison of Swedish female outpatients with anorexia nervosa or bulimia nervosa and controls. (4th July 2018)

• Record Type: Journal Article
• Authors: Lindberg, Karolin; Nevonen, Lauri; Gustafsson, Sanna Aila; Nyman-Carlsson, Erika; Norring, Claes
• Is Part Of: Nordic journal of psychiatry. Volume 72:Number 5(2018)
• Page Start: 347
• Page End: 353
• Publication Date: 2018-07-04
• Subjects: Anorexia nervosa -- bulimia nervosa -- inventory of interpersonal problems -- IIP-64 -- psychometrics; Psychopharmacology -- Periodicals; Psychotherapy -- Periodicals; Psychiatry -- Periodicals; Psychiatry -- Scandinavia -- Periodicals; 616.89
• DOI: 10.1080/08039488.2018.1465589
• Languages: English
• ISSNs: 0803-9488

Abstract

Abstract: Aim: The aim of the study was to explore the psychometric properties of the Inventory of Interpersonal Problems (IIP-64) and to compare levels of interpersonal distress in Swedish female outpatients with anorexia nervosa or bulimia nervosa with age- and gender-matched controls. Methods: Totally, 401 participants were included; anorexia nervosa ( n = 74), bulimia nervosa ( n = 85) and controls ( n = 242). All participants completed the IIP-64. The eating disorder (ED) patients also filled out the Eating Disorder Inventory-2/3 (EDI). Results: Internal consistency of IIP-64 was acceptable to high. Principal component analyses with varimax rotation of the IIP-64 subscales confirmed the circumplex structure with two underlying orthogonal dimensions; affiliation and dominance. Significant correlations between EDI-3 composite scales ineffectiveness and interpersonal problems and IIP-64 were found. ED patients reported higher levels of interpersonal distress than controls on all but one subscale (intrusive/needy). Conclusions: IIP-64 can be considered to have acceptable to good reliability and validity in a Swedish ED sample. IIP-64 can be a useful complement in assessment of interpersonal problems in ED.