The accuracy of self-reported weights

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Abstract
The accuracy of self-reported weights was assessed by comparing reported weights with measured weights of 1302 subjects at eight different medical and nonmedical sites across two countries (United States and Denmark), across ages, sexes, and different purposes for the weight measurements. Self-reported weights were remarkably accurate across all these variables in the American sample, even among obese people, and may obviate the need for measured weights in epidemiological investigations. Danish reports were somewhat less accurate, particularly among women over 40 yr of age.