Quantification of results for estimating elemental dietary intakes of lithium, rubidium, strontium, molybdenum, vanadium and silver

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Abstract
Quantification of recorded results must establish the integrity of individual results while at the same time ensuring that information derived from such results is not degraded. Daily dietary intake values have been calculated from arithmetic results obtained for ten diets of the UK total diet survey for six elements in three to five different ways. Quantifying arithmetic results from zero upwards in intervals defined by 68% confidence intervals has been shown to give comparable means for the homogenate groups of the ten diets with means obtained from the recorded arithmetic results for homogenate groups of the ten diets. Even when as many as 90% of the arithmetic results of an elemental survey are below the limit of detection of results for an element, the maximum difference in the derived daily dietary intake is 3% between that calculated from arithmetic results and that from results quantified by 68% confidence intervals. The best estimate for the intakes obtained for lithium, rubidium, strontium, molybdenum, vanadium and silver in this exercise are listed.

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