The Accuracy of Weight Reported in a Web-Based Obesity Treatment Program

  • Harvey-Berino J
  • Krukowski R
  • Buzzell P
 et al. 
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OBJECTIVE: The overall goal of the study was to understand the accuracy of self-reported weight over a 6-month Web-based obesity program.

MATERIALS AND METHODS: As part of a larger study, subjects (n=323; 93% female; 28% African American) were randomized to a 6-month Internet-based behavioral weight loss program with weekly group meetings delivered either: (1) entirely by online synchronous chats or (2) by a combination of online chats plus monthly in-person group sessions. Observed weights were obtained at 0 and 6 months for all participants. Self-reported weights were submitted weekly to the study Web site. Differences in Observed and Reported weights were examined by gender, race, and condition.

RESULTS: Observed and Reported weight were significantly correlated at 0 and 6 months (r=0.996 and 0.996, ps
CONCLUSIONS: In general, the accuracy of self-reported weight is high for individuals participating in an Internet-based weight loss treatment program. Accuracy differed slightly by amount of weight lost and was not improved with periodic in-person assessment. Importantly, weight change by self-report was comparable to observed, suggesting that it is suitable for Web-based obesity treatment.

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  • Jean Harvey-Berino

  • Rebecca A. Krukowski

  • Paul Buzzell

  • Doris Ogden

  • Joan Skelly

  • Delia S. West

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