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Health Education Research Advance Access originally published online on September 7, 2007
Health Education Research 2008 23(3):567-575; doi:10.1093/her/cym044
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© The Author 2007. Published by Oxford University Press. All rights reserved. For permissions, please email: journals.permissions@oxfordjournals.org

Developing a consumer evaluation tool of weight control strategy advertisements on the Internet

Kanokrat Luevorasirikul*, Nicola J. Gray and Claire W. Anderson

Division of Social Research in Medicines and Health, School of Pharmacy, University of Nottingham NG7 2RD, England, UK

* Correspondence to: K. Luevorasirikul. E-mail: paxkl{at}nottingham.ac.uk

To develop two evaluation tools for weight loss and weight gain advertisements on the Internet in order to help consumers to evaluate the quality of information within these advertisements. One hundred websites identified by Internet search engines for weight loss and weight gain strategies (50 websites each) were evaluated using two specific scoring instruments, developed by adapting questions from the ‘DISCERN’ tool and reviewing all related weight control guidelines and advertising regulations. The validity and reliability of the adapted tools were tested. Our evaluation tools rated the information from most websites as poor quality (70%). In the case of weight loss strategies, statements about rapid (18%) and permanent (28%) weight loss caused concern as well as lack of sensible advice about dieting and a lack of product warnings (84%). Safety concerns relating to weight gain products were the lack of warnings about side effects in products containing steroids and creatine (92%). The adapted tools exhibited acceptable validity and reliability. Quality of information within weight control advertisements on the Internet was generally poor. Problems of false claims, little advice on healthy ways to modify weight and few warnings on side effects have been highlighted in this study.

Received on July 20, 2006; accepted on June 11, 2007


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