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. 2023 Aug 4;10:1059870. doi: 10.3389/fnut.2023.1059870

Table 5.

Reproducibility assessed by intraclass correlation coefficients (ICC) comparing FFQ1 and FFQ2 (N = 848).

Food groups ICC (95% CI) Agreement (%)
Crude Energy-adjusted Same Adjacent Extreme
Whole grains 0.63 (0.58–0.68) 0.65 (0.6–0.69) 53.4 38.6 8.0
Refined grains 0.77 (0.73–0.8) 0.68 (0.64–0.73) 50.2 41.4 8.4
Legumes 0.44 (0.36–0.51) 0.42 (0.34–0.49) 46.3 41.8 11.9
Fish 0.57 (0.51–0.62) 0.53 (0.46–0.59) 55.7 35.9 8.4
Red meat 0.61 (0.55–0.66) 0.61 (0.55–0.66) 54.3 37.8 7.9
Processed meat 0.53 (0.46–0.59) 0.61 (0.55–0.66) 76.0 0 24.0
Chicken 0.71 (0.67–0.75) 0.65 (0.6–0.69) 51.5 39.5 9.0
Eggs 0.54 (0.48–0.6) 0.53 (0.47–0.59) 47.7 41.6 10.7
Other meat 0.62 (0.57–0.67) 0.54 (0.48–0.6) 53.8 37.8 8.4
Pizza 0.57 (0.51–0.62) 0.57 (0.51–0.63) 69.7 22.4 7.9
Cheese 0.53 (0.47–0.59) 0.59 (0.53–0.64) 52.7 36.3 11.0
Dairy 0.69 (0.65–0.73) 0.66 (0.62–0.71) 51.1 40.7 8.1
Vegetables 0.64 (0.59–0.69) 0.6 (0.55–0.65) 52.7 38.5 8.9
Fresh fruit juice 0.4 (0.31–0.47) 0.51 (0.43–0.57) 55.4 31.3 13.3
Fruit 0.67 (0.62–0.71) 0.68 (0.64–0.72) 56.0 37.1 7.0
Dried fruit 0.61 (0.56–0.66) 0.55 (0.48–0.6) 50.3 39.3 10.4
Solid fats 0.67 (0.63–0.71) 0.69 (0.65–0.73) 61.2 32.8 6.0
Oils 0.61 (0.55–0.66) 0.62 (0.57–0.67) 55.1 35.3 9.6
Olives 0.59 (0.53–0.64) 0.6 (0.54–0.65) 66.1 24.3 9.6
Nuts and seeds 0.56 (0.5–0.62) 0.59 (0.53–0.64) 55.7 36.5 7.8
Sugar 0.74 (0.7–0.77) 0.72 (0.68–0.76) 57.9 33.9 8.3
Sweets 0.6 (0.54–0.65) 0.62 (0.56–0.67) 53.5 37.9 8.6
Sweetened drinks 0.72 (0.68–0.76) 0.72 (0.68–0.76) 57.0 37.0 6.0
Tea 0.66 (0.61–0.71) 0.71 (0.67–0.75) 54.8 37.1 8.1
Salty snacks 0.62 (0.57–0.67) 0.46 (0.38–0.53) 59.7 30.8 9.4
Salt 0.5 (0.43–0.56) 0.51 (0.43–0.57) 47.5 40.3 12.3