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HCS: estimation of nutrient intake

Derived measures: Estimation of nutrient intake

Following the general procedure outlined in Estimating nutrient intakes from DATs, standard portion sizes were allocated to each food in the FFQ based on previously published references [26].

Nutrient intakes were calculated by multiplying the frequency of consumption of a portion of each food by its nutrient content based on the UK national food composition databases (McCance and Widdowson) [27] or manufacturers’ composition data where appropriate.

Nutrient intakes from dietary supplements were calculated using the frequency and dose reported by the participant, and manufacturers’ supplement composition data.

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