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Christopher C. Cushing, Ric G. Steele, Psychometric Properties of Sizing Me Up in a Community Sample of 4th and 5th Grade Students With Overweight and Obesity, Journal of Pediatric Psychology, Volume 37, Issue 9, October 2012, Pages 1012–1022, https://doi.org/10.1093/jpepsy/jss075
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Abstract
Objective To extend the health-related quality of life assessment literature by examining the reliability and validity of Sizing Me Up in a community sample of nontreatment-seeking overweight and obese children. Methods Participants included 302 students (M age = 10.34) recruited from 6 elementary schools, who completed self-report measures of health-related quality of life and weight-related health. Results 134 overweight and obese children were included in the analyses to establish validity for the measure. Confirmatory factor analyses supported a 5-factor first-order factor structure with 1 second-order factor representing a total score. Convergent and criterion-related validity was established among overweight and obese children. Estimates of internal consistency for the 5-factor Sizing Me Up factor structure indicated that the subscales are not acceptable outside of a structural equation modeling approach. Conclusion Outside of a structural equation modeling framework, only the total score appears to be appropriate in this population.