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. Author manuscript; available in PMC: 2012 Sep 11.
Published in final edited form as: P R Health Sci J. 2011 Jun;30(2):58–64.

Table 6.

Comparisons of the second FFQ scores with mean daily intakes derived from the diet records, based on cross classification by quartiles in elementary children (%)

Nutrient Same quartile Within 1 quartile Within 2 quartiles Gross-misclassification
Energy (kcal) 32.3 34.4 24.0 7.3
Protein (g) 29.2 29.2 31.3 8.3
Fat (g) 33.3 33.3 21.9 9.4
CHO (g) 29.2 33.3 21.9 13.5
Ca (mg) 22.9 36.5 31.3 7.3
Fe (mg) 25.0 42.7 19.8 10.4
Mg (mg) 25.0 41.7 22.9 8.3
Vit C (mg) 33.3 29.2 20.8 14.6
Vit B6 (mg) 30.2 34.4 25.0 8.3
Vit B12 (mcg) 29.2 25.0 31.3 12.5
Folate (mcg) 21.9 38.5 24.0 13.5
Vit D (mcg) 25.0 36.5 26.0 9.4