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Wehling, Helena and Lusher, Joanne (2017) People with a body mass index ⩾30 under-report their dietary intake: a systematic review. Journal of Health Psychology, 24 (14). pp. 2042-2059. ISSN 1461-7277
Under-reporting of total energy intake is a common and well-known source of measurement error in dietary assessment, and evidence suggests that this bias is particularly significant in obese individuals. After a multi-stage selection process of eligible papers, this literature review appraised 34 papers detailing the accuracy of self-reported dietary intake in people with an obese body mass index (BMI ⩾ 30). The available literature to date shows that having a body mass index ⩾30 is associated with significant under-reporting of food intake. Future research should look into identifying effective techniques to reduce this bias in clinical practice.
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