Comparison of a Condensed 12-Week Version and a 24-Week Version of a Family-Based Pediatric Weight Management Program

AbstractBackground:The current study compares the effectiveness of a condensed 12-week version and a 24-week version of the same pediatric behavioral weight management program.Methods:Children (n=162) between the ages of 8 and 18 years (baseline BMIz=2.39; standard deviation=0.29) were randomized to either a 12- or 24-week version of the same behavioral weight management program. Child anthropometric data were recorded at baseline, 6 weeks, 12 weeks, 24 weeks, and 12 months. A two-level longitudinal model was used to examine within- and between-group differences in BMIzchange over time.Results:A significant group-by-time interaction was found (β=−0.01; standard error, <0.01; p<0.01) with the 24-week group showing greater reductions in BMIz. Children in the 24-week group showed significant BMIzreductions over time (z=−5.18; p<0.01), but children in the 12-week group did not (z=−0.85; p=0.39).Conclusions:Children in the 24-week program demonstrated greater reductions in BMIzthan children in the 12-week group. Therefore, there may be additional benefit to sessions above and beyond the 8- to 12-week minimum suggested for pediatric weight management programs.