| Test-retest reliability (n = 52)(FFQtime1 vs. FFQtime2) | Relative validity (n = 41)(FFQtime1 vs. 4DFR) | |||||
---|---|---|---|---|---|---|---|
Food Groups | SCC | ICC | % CC | % GM | SCC | % CC | % GM |
Fruit juice or cordials | 0.46 | 0.57 | 61 | 10 | 0.40 | 46 | 10 |
Artificially sweetened drinks | 0.82 | 0.68 | 80 | 4 | 0.25 | 56 | 24 |
Tea or coffee | 0.85 | 0.70 | 88 | 4 | 0.43 | 63 | 20 |
Milky or chocolate drinks | 0.75 | 0.81 | 67 | 2 | 0.62 | 46 | 5 |
Sugar-added drinks | 0.77 | 0.37 | 71 | 4 | 0.32 | 49 | 17 |
Rice, pasta or noodles | 0.47 | 0.80 | 75 | 25 | 0.44 | 37 | 17 |
Non-white bread or bun 1 | 0.80 | 0.72 | 61 | 4 | 0.36 | 45 | 13 |
Breakfast cereals | 0.78 | 0.74 | 56 | 0 | 0.67 | 56 | 10 |
White bread or bun | 0.78 | 0.64 | 73 | 4 | 0.40 | 37 | 10 |
Cheese | 0.67 | 0.58 | 58 | 2 | 0.40 | 41 | 10 |
Non-standard milk 2 | 0.87 | 0.79 | 78 | 0 | 0.59 | 55 | 8 |
Standard milk 3 | 0.83 | 0.78 | 67 | 0 | 0.70 | 61 | 2 |
Yoghurt | 0.79 | 0.84 | 75 | 0 | 0.46 | 54 | 10 |
Poultry | 0.63 | 0.34 | 69 | 6 | 0.46 | 51 | 7 |
Eggs | 0.80 | 0.53 | 77 | 0 | 0.52 | 41 | 5 |
Nuts or seeds | 0.71 | 0.73 | 71 | 6 | 0.24 | 54 | 22 |
Meat alternatives | 0.54 | 0.92 | 83 | 17 | 0.55 | 78 | 22 |
Legumes | 0.50 | 0.45 | 53 | 6 | 0.42 | 59 | 17 |
Red meat and processed meat | 0.60 | 0.26 | 62 | 8 | 0.13 | 41 | 15 |
Fish and seafood | 0.76 | 0.67 | 65 | 2 | 0.34 | 41 | 15 |
Fruits | 0.58 | 0.83 | 58 | 8 | 0.27 | 44 | 10 |
Cruciferous vegetables | 0.72 | 0.64 | 63 | 4 | 0.26 | 46 | 20 |
Green leafy vegetables | 0.74 | 0.77 | 69 | 4 | 0.27 | 44 | 17 |
Red or yellow vegetables | 0.60 | 0.70 | 46 | 2 | 0.08 | 27 | 12 |
Marrow-like vegetables | 0.59 | 0.76 | 56 | 6 | 0.39 | 59 | 17 |
Potatoes | 0.56 | 0.61 | 71 | 6 | 0.25 | 27 | 7 |
Other vegetables | 0.65 | 0.56 | 60 | 4 | 0.40 | 59 | 10 |
Sweet bakery products 4 | 0.65 | 0.62 | 67 | 10 | 0.56 | 44 | 12 |
Sweet snack bars 5 | 0.65 | 0.56 | 60 | 4 | 0.58 | 61 | 5 |
Nut spreads | 0.79 | 0.73 | 73 | 2 | 0.37 | 59 | 20 |
Ice-cream | 0.64 | 0.79 | 58 | 4 | 0.42 | 51 | 5 |
Sweets 6 | 0.79 | 0.54 | 77 | 2 | 0.18 | 39 | 20 |
Convenience foods 7 | 0.56 | 0.67 | 67 | 10 | 0.04 | 46 | 29 |
Savoury biscuits and crisps | 0.70 | 0.70 | 62 | 4 | 0.29 | 39 | 12 |