Psychometric evaluation of the German version of the impact of weight on Quality of Life-Lite (IWQOL-Lite) questionnaire

Experimental and Clinical Endocrinology & Diabetes : Official Journal, German Society of Endocrinology [and] German Diabetes Association
A MuellerM de Zwaan

Abstract

To evaluate the psychometric properties of a German version of the Impact of Weight on Quality of Life-Lite (IWQOL-Lite) questionnaire. IWQOL-Lite scores were obtained from 351 overweight/obese individuals and 127 lean adult volunteers. In addition, a subgroup of 126 obese subjects completed also the German versions of the 36-item short-form health survey (SF-36), the Beck Depression Inventory (BDI), the Eating Disorder Examination-Questionnaire (EDE-Q), and the German validated version of the Three-Factor Eating Questionnaire (TFEQ). The German version of the IWQOL-Lite has psychometric properties comparable to those found for the original version and demonstrates high internal consistency and excellent construct validity. Furthermore, the German IWQOL-Lite clearly discriminates between groups based on BMI on all subscales and the total score. The results of the present study suggest that the German IWQOL-Lite is a psychometrically validated instrument with which to measure weight-specific health related quality of life.

Citations

Aug 30, 2012·International Journal of Obesity : Journal of the International Association for the Study of Obesity·N R FullerI D Caterson
Oct 15, 2013·Surgery for Obesity and Related Diseases : Official Journal of the American Society for Bariatric Surgery·David B SarwerNicholas J Christian
Jun 30, 2012·Journal of Clinical Epidemiology·Andreas MayrMartina de Zwaan
Apr 1, 2014·Surgery for Obesity and Related Diseases : Official Journal of the American Society for Bariatric Surgery·Christina C WeeGeorge L Blackburn
Sep 29, 2011·Surgery for Obesity and Related Diseases : Official Journal of the American Society for Bariatric Surgery·Wendy C KingBruce M Wolfe
Dec 5, 2013·International Journal of Obesity : Journal of the International Association for the Study of Obesity·N R FullerI D Caterson
Aug 10, 2017·Obesity Surgery·Astrid MüllerMartina de Zwaan
Jun 10, 2021·Obesity Reviews : an Official Journal of the International Association for the Study of Obesity·Stephanie PapadopoulosLeah Brennan

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