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

Journal Article

OBJECTIVE: To evaluate the psychometric properties of a German version of the Impact of Weight on Quality of Life-Lite (IWQOL-Lite) questionnaire. METHOD: 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). RESULTS: 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. CONCLUSION: 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.

Full Text

Duke Authors

Cited Authors

  • Mueller, A; Holzapfel, C; Hauner, H; Crosby, RD; Engel, SG; Mühlhans, B; Kolotkin, RL; Mitchell, JE; Horbach, T; Zwaan, MD

Published Date

  • February 2011

Published In

Volume / Issue

  • 119 / 2

Start / End Page

  • 69 - 74

PubMed ID

  • 20658439

Electronic International Standard Serial Number (EISSN)

  • 1439-3646

International Standard Serial Number (ISSN)

  • 0947-7349

Digital Object Identifier (DOI)

  • 10.1055/s-0030-1261922

Language

  • eng