Validation of the Inventory of Interpersonal Problems (IIP-64): a comparison of Swedish female outpatients with anorexia nervosa or bulimia nervosa and controls |
| |
| Authors: | Karolin Lindberg Lauri Nevonen Sanna Aila Gustafsson Erika Nyman-Carlsson Claes Norring |
| |
| Institution: | 1. Department of Clinical Neuroscience, Centre for Psychiatry Research, Karolinska Institutet, Stockholm, Sweden;2. R&3. D Unit, Stockholm Centre for Eating Disorders, Stockholm County Council, Stockholm, Sweden;4. karolin.lindberg@ki.se;6. Praktikertj?nst Psychiatry AB, Stockholm, Sweden;7. School of Medical Sciences, ?rebro University, ?rebro, Sweden;8. Praktikertj?nst Psychiatry AB, Stockholm, Sweden |
| |
| 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. |
| |
| Keywords: | Anorexia nervosa bulimia nervosa inventory of interpersonal problems IIP-64 psychometrics |
|
|
