Journal
OBESITY
Volume 14, Issue 3, Pages 448-457Publisher
WILEY
DOI: 10.1038/oby.2006.59
Keywords
health-related quality of life; Impact of Weight on Quality of Life-Kids; weight loss; pediatric; adolescent
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Objective: The development of a new weight-related measure to assess quality of life in adolescents [impact of Weight oil Quality of Life (IWQOL)-Kids] is described. Research Methods and Procedures: Using a literature search, clinical experience. and consultation with pediatric clinicians, 73 items were developed. pilot tested, and administered to 642 participants. I I to 19 years old, recruited from weight loss programs/studies and community samples (mean z-BMI, 1.5; range, - 1.2 to 3.4; mean age, 14.0; 60% female; 56% white). Participants completed the 73 items and the Pediatric Quality of Life Inventory and were weighed and measured. Results: Four factors (27 items) were identified (physical comfort. body esteem, social life, and family relations), accounting for 71% of the variance. The IWQOL-Kids demonstrated excellent psychometric properties. Internal consistency coefficients ranged from 0.88 to 0.95 for scales and equaled 0.96 for total score. Convergent validity was demonstrated with strong correlations between IWQOL-Kids total score and the Pediatric Quality of Life Inventory (r=0.76, p < 0.0001). Significant differences were found across BMI groups and between clinical and community samples, supporting the sensitivity of this measure. Participant in a weight loss camp demonstrated improved IWQOL-Kids scores, suggesting responsiveness of the IWQOL-Kids to weight loss/social support intervention. Discussion: The present study provides preliminary evidence regarding the psychometric properties of the IWQOL-Kids, a weight-related quality of life measure for adolescents. Given the rise of obesity ill youth, the development of a reliable and valid weight-related measure of quality of life is timely.
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