Table 3

Percentage for cross-classification of energy-adjusted nutrient intakes into quartiles estimated from the Food Frequency Questionnaire (FFQ) and 24-Hour Recalls (24-HDRs)
Nutrienta Women Men
Same quartile (%) Adjacent quartile (%) One quartile apart (%) Grossly misclassified (%) Same quartile (%) Adjacent quartile (%) One quartile apart (%) Grossly misclassified (%)
Energy (kcal) 24.8 43.1 24.2 7.8 40.5 33.3 21.4 4.8
Protein (g) 33.3 41.2 18.3 7.2 23.8 45.2 23.8 7.1
Carbohydrate (g) 32.7 45.1 19.0 3.3 40.5 45.2 12.0 2.3
Dietary Fibre (g) 40.5 38.6 17.6 3.3 38.1 42.9 19.0 0.0
Total Fat (g) 34.6 35.3 23.5 6.5 31.0 42.9 16.6 9.5
Saturated Fat (g) 32.7 42.5 17.6 7.2 28.6 50.0 14.3 7.1
Monounsaturated Fat (g) 37.9 33.3 20.3 8.5 38.1 45.2 9.5 7.1
Polyunsaturated Fat (g) 34.0 32.7 24.2 9.1 33.3 42.9 14.3 9.5
Cholesterol (mg) 32.7 36.6 24.2 6.5 40.5 40.5 11.9 7.1
Vitamin A(RAE) 30.1 42.5 20.3 7.2 26.2 47.6 21.4 4.8
Carotene (RE) 37.9 39.2 16.3 6.5 31.0 40.5 21.4 7.1
Vitamin D (IU) 38.6 39.2 18.3 3.9 23.8 57.1 14.3 4.8
Calcium (mg) 31.4 45.8 19.0 3.9 33.3 52.4 9.5 4.8

a Classification was performed using log-transformed nutrient values.

Liu et al.

Liu et al. Nutrition Journal 2013 12:49   doi:10.1186/1475-2891-12-49

Open Data