European journal of clinical nutrition
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Comparative Study
Dietary assessment in Whitehall II: the influence of reporting bias on apparent socioeconomic variation in nutrient intakes.
To assess socio-economic differences in nutrient intake, giving particular consideration to the influence of reporting bias. ⋯ Low energy reporting is a major source of bias in dietary surveys and its prevalence shows a marked inverse association with socio-economic status. The energy adjustment method provides an approach which reduces this bias without exclusion of low energy reporters. Intakes of micronutrients including vitamin C, rather than fatty acids, showed associations with socio-economic status consistent with a dietary explanation for social inequalities in cardiovascular disease.