Table 7. Misclassification and weighted kappa between FFQs and 24-HRs.
| Variables | FFQ1 vs. 24-HRs | FFQ2 vs. 24-HRs | Mean a vs. 24-HRs | |||||||||
| Same (%) | Adjacent (%) | Extreme (%) | Weighted kappa | Same (%) | Adjacent (%) | Extreme (%) | Weighted kappa | Same (%) | Adjacent (%) | Extreme (%) | Weighted kappa | |
| Food groups | ||||||||||||
| Cereal (g) | 43.0 | 40.6 | 1.0 | 0.40 | 40.6 | 42.0 | 3.4 | 0.36 | 4.3 | 39.1 | 2.4 | 0.45 |
| Pickled vegetable (g) | 30.0 | 34.8 | 9.2 | 0.10 | 29.5 | 40.6 | 10.6 | 0.12 | 32.4 | 40.6 | 9.7 | 0.18 |
| Egg (g) | 31.4 | 34.3 | 9.7 | 0.13 | 37.2 | 31.4 | 9.2 | 0.22 | 34.8 | 36.7 | 7.7 | 0.21 |
| Meat (g) | 43.0 | 40.6 | 2.9 | 0.40 | 44.9 | 35.3 | 3.4 | 0.38 | 50.2 | 34.3 | 3.9 | 0.46 |
| Fish and shellfish (g) | 31.4 | 43.0 | 4.8 | 0.25 | 41.6 | 38.2 | 7.3 | 0.35 | 40.1 | 37.2 | 5.3 | 0.33 |
| Milk (g) | 60.4 | 17.9 | 5.8 | 0.26 | 61.4 | 18.4 | 6.3 | 0.28 | 54.1 | 20.8 | 6.3 | 0.28 |
| Snack and nut (g) | 39.6 | 25.1 | 11.2 | 0.17 | 36.2 | 31.4 | 11.1 | 0.17 | 35.3 | 30.9 | 11.6 | 0.21 |
| Bean (g) | 39.1 | 41.1 | 4.8 | 0.32 | 35.3 | 43.0 | 5.3 | 0.27 | 42.0 | 38.7 | 3.4 | 0.36 |
| Vegetable (g) | 34.3 | 32.9 | 7.3 | 0.15 | 33.8 | 38.2 | 7.7 | 0.18 | 33.3 | 39.6 | 7.3 | 0.19 |
| Fruit (g) | 33.8 | 35.8 | 9.2 | 0.23 | 37.2 | 33.8 | 7.3 | 0.28 | 38.2 | 31.9 | 6.3 | 0.29 |
| Oil (g) | 28.5 | 38.7 | 10.6 | 0.07 | 39.6 | 32.4 | 8.2 | 0.20 | 33.3 | 39.1 | 7.3 | 0.16 |
| Nutrients | ||||||||||||
| Energy (Kcal) | 42.5 | 39.6 | 1.9 | 0.38 | 40.6 | 42.0 | 2.4 | 0.37 | 47.3 | 37.7 | 1.9 | 0.44 |
| Protein (mg) | 44.0 | 41.1 | 1.5 | 0.42 | 44.0 | 38.2 | 1.5 | 0.40 | 41.1 | 43.5 | 1.0 | 0.40 |
| Fat (mg) | 36.7 | 44.0 | 2.4 | 0.32 | 36.7 | 39.1 | 4.4 | 0.26 | 41.6 | 39.6 | 1.9 | 0.37 |
| Fiber (mg) | 26.6 | 41.1 | 9.7 | 0.07 | 34.3 | 39.6 | 7.7 | 0.20 | 31.9 | 40.6 | 7.7 | 0.17 |
| Carbohydrate (mg) | 38.7 | 34.3 | 2.4 | 0.27 | 32.4 | 42.0 | 4.4 | 0.22 | 41.1 | 36.2 | 1.5 | 0.33 |
| Vitamin A (µg) | 33.8 | 39.1 | 6.3 | 0.20 | 32.4 | 34.3 | 8.2 | 0.13 | 33.3 | 39.6 | 5.8 | 0.20 |
| Carotene (µg) | 35.8 | 36.7 | 6.8 | 0.21 | 30.9 | 37.2 | 9.2 | 0.12 | 32.4 | 41.1 | 6.3 | 0.20 |
| Thiamin (mg) | 38.2 | 39.1 | 5.3 | 0.28 | 37.7 | 38.2 | 3.4 | 0.28 | 41.6 | 36.7 | 3.9 | 0.33 |
| Riboflavin (mg) | 37.7 | 39.1 | 3.4 | 0.29 | 38.7 | 36.2 | 3.9 | 0.27 | 43.0 | 34.8 | 2.9 | 0.34 |
| Niacin (mg) | 38.7 | 40.1 | 3.4 | 0.31 | 41.1 | 40.1 | 3.4 | 0.35 | 42.5 | 41.1 | 2.9 | 0.38 |
| Vitamin E (mg) | 35.3 | 38.7 | 5.8 | 0.23 | 34.3 | 37.7 | 4.8 | 0.21 | 39.1 | 36.2 | 3.4 | 0.29 |
| Sodium (mg) | 27.5 | 44.9 | 8.2 | 0.13 | 30.4 | 42.5 | 7.7 | 0.16 | 31.4 | 44.9 | 9.2 | 0.19 |
| Calcium (mg) | 38.7 | 43.0 | 5.3 | 0.32 | 37.2 | 35.3 | 5.3 | 0.23 | 41.6 | 39.6 | 4.8 | 0.34 |
| Iron (mg) | 39.1 | 44.4 | 2.9 | 0.36 | 42.0 | 38.7 | 1.9 | 0.36 | 42.5 | 40.6 | 1.9 | 0.39 |
| Vitamin C (mg) | 31.9 | 41.1 | 8.2 | 0.17 | 31.4 | 40.1 | 7.3 | 0.17 | 30.4 | 47.3 | 7.7 | 0.20 |
| Cholesterol(mg) | 39.1 | 38.2 | 4.4 | 0.30 | 38.2 | 38.7 | 5.8 | 0.27 | 38.2 | 38.7 | 2.9 | 0.30 |
a
mean of FFQ1 and FFQ2.