Table 3.
Mean agreement and limits of agreement between food intakes estimated by the web-FFQ and the print-FFQ.
| Food Groups | Mean Agreement (95% CI) | Lower LOA | Upper LOA | Slope (β) |
|---|---|---|---|---|
| Potatoes | −0.030 (−0.254, 0.194) | −2.973 | 2.913 | 0.054 |
| Cooked vegetables | −0.089 (−0.220, 0.042) | −1.809 | 1.631 | 0.111 |
| Raw vegetables | 0.050 (−0.138, 0.238) | −2.421 | 2.521 | −0.126 |
| Legumes | 0.038 (−0.146, 0.222) | −2.384 | 2.460 | 0.017 |
| Fruit | −0.097 (−0.281, 0.088) | −2.520 | 2.327 | −0.047 |
| Nuts | −0.220 (−0.361, −0.079) | −2.072 | 1.632 | −0.139 |
| Milk | 0.151 (−0.162, 0.465) | −3.966 | 4.269 | −0.073 |
| Yoghurt | −0.195 (−0.414, 0.023) | −3.066 | 2.675 | −0.065 |
| Curd cheese | 0.065 (−0.159, 0.288) | −2.869 | 2.999 | 0.032 |
| Ripened cheese | −0.042 (−0.222, 0.139) | −2.421 | 2.337 | −0.102 |
| Pasta | −0.087 (−0.235, 0.060) | −2.029 | 1.854 | −0.009 |
| Rice | −0.052 (−0.243, 0.140) | −2.567 | 2.464 | 0.009 |
| White bread | −0.153 (−0.341, 0.036) | −2.638 | 2.332 | −0.092 |
| Whole wheat bread | −0.086 (−0.352, 0.181) | −3.586 | 3.414 | −0.088 |
| Breakfast cereals | −0.040 (−0.214, 0.135) | −2.334 | 2.254 | −0.097 |
| Red meat | 0.002 (−0.149, 0.153) | −1.978 | 1.983 | −0.078 |
| White meat | −0.040 (−0.294, 0.215) | −3.385 | 3.306 | 0.010 |
| Processed meat | 0.030 (−0.089, 0.149) | −1.536 | 1.596 | −0.090 |
| Offal | 0.020 (−0.052, 0.093) | −0.932 | 0.973 | 0.514 *** |
| Canned fish | −0.212 (−0.419, −0.006) | −2.922 | 2.497 | 0.037 |
| Shellfish | 0.314 (0.073, 0.555) | −2.848 | 3.476 | 0.258 ** |
| Fish | −0.024 (−0.204, 0.157) | −2.402 | 2.354 | 0.117 |
| Eggs | 0.070 (−0.089, 0.230) | −2.023 | 2.163 | 0.023 |
| Vegetable oil | −0.069 (−0.259, 0.121) | −2.562 | 2.424 | −0.132 |
| Olive oil | −0.162 (−0.296, −0.027) | −1.924 | 1.600 | 0.078 |
| Butter and margarine | 0.086 (−0.025, 0.198) | −1.378 | 1.551 | −0.005 |
| Sweet and processed sugar | 0.065 (−0.081, 0.210) | −1.859 | 1.988 | 0.080 |
| Fruit juice | 0.762 (0.432, 1.091) | −3.563 | 5.087 | 0.011 |
| Coffee | 0.013 (−0.197, 0.223) | −2.744 | 2.769 | 0.029 |
| Tea | −0.232 (−0.548, 0.084) | −4.381 | 3.917 | −0.040 |
| Dipping sauces | −0.066 (−0.156, 0.024) | −1.242 | 1.110 | −0.079 |
| Soup | −0.011 (−0.208, 0.186) | −2.595 | 2.573 | −0.054 |
| Pizza | −0.231 (−0.479, 0.018) | −3.496 | 3.034 | 0.246 |
| Wine | −0.076 (−0.253, 0.100) | −2.396 | 2.244 | 0.010 |
| Alcoholic drink | −0.076 (−0.296, 0.143) | −2.963 | 2.811 | 0.054 |
| Beer | −0.082 (−0.333, 0.169) | −3.379 | 3.216 | −0.028 |
| Salty snacks | −0.089 (−0.219, 0.042) | −1.803 | 1.625 | −0.117 |
| Fries | 0.063 (−0.124, 0.250) | −2.393 | 2.520 | −0.023 |
| Fruit salad | 0.093 (−0.128, 0.313) | −2.803 | 2.989 | 0.170 * |
Abbreviations: 95% CI, 95% confidence interval; LOA, limits of agreement. *** p < 0.001; ** p < 0.01; * p < 0.05.