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. 2016 May 17;10(4):433–441. doi: 10.4162/nrp.2016.10.4.433

Table 6. Agreement proportions in quartile distributions of energy and 15 nutrients between first administration of the FFQ and 8-day food records.

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1) Percentage of subjects in the same quartile of nutrient intakes from FFQ1 and 8-day food records

2) Percentage of subjects in the same or adjacent quartiles of nutrient intakes from FFQ1 and 8-day food records

3) Opposite (lowest/highest) quartiles

4) Weighted kappa