Table 4.
Agreement (weighted k) and cross-classification of quartiles of energy and nutrient intakes
| Nutrient | Unadjusted data | Energy-adjusted data | ||||||
|---|---|---|---|---|---|---|---|---|
| Weighted k (95% CI) | Exact agreement (%) | Exact agreement + Adjacent (%) | Disagreement (%) | Weighted k (95% CI) | Exact agreement (%) | Exact agreement + Adjacent (%) | Disagreement (%) | |
| Energy (kcal) | 0.582 (0.495; 0.669) | 53.42 | 95.2 | 4.79 | – | |||
| Protein (g) | 0.455 (0.354; 0.555) | 45.89 | 87.67 | 12.33 | 0.137 (0.020; 0.255) | 30.14 | 69.87 | 30.14 |
| Fat (g) | 0.231 (0.116; 0.345) | 31.51 | 76.03 | 23.97 | 0.477 (0.381; 0.572) | 43.84 | 91.79 | 8.22 |
| Carbohydrate (g) | 0.542 (0.452; 0.632) | 49.32 | 94.53 | 5.42 | 0.353 (0.249; 0.458) | 36.99 | 83.62 | 14.38 |
| Vitamin A (μg) | 0.263 (0.150; 0.377) | 33.56 | 78.68 | 21.23 | 0.135 (0.015; 0.255) | 33.56 | 70.55 | 29.45 |
| β carotene (μg) | 0.229 (0.107; 0.351) | 38.62 | 73.79 | 26.21 | 0.269 (0.151; 0.388) | 40.41 | 76.71 | 23.29 |
| Vitamin D (μg) | −0.049 (−0.163; 0.064) | 19.18 | 60.96 | 39.04 | 0.030 (−0.086; 0.147) | 25.34 | 65.75 | 34.25 |
| Vitamin E (mg) | 0.27 (0.156; 0.384) | 34.97 | 78.33 | 21.68 | 0.377 (0.274; 0.481) | 39.04 | 84.25 | 15.75 |
| Vitamin C (mg) | 0.246 (0.134; 0.359) | 33.56 | 75.34 | 24.66 | 0.052 (−0.071; 0.175) | 28.77 | 65.76 | 34.25 |
| Thiamine (mg) | 0.412 (0.309; 0.515) | 41.10 | 86.99 | 13.01 | 0.292 (0.180; 0.403) | 36.30 | 80.14 | 19.86 |
| Riboflavin (mg) | 0.346 (0.238; 0.454) | 39.04 | 82.19 | 17.81 | 0.150 (0.028; 0.272) | 34.25 | 71.24 | 28.77 |
| Niacin (mg) | 0.371 (0.263; 0.480) | 41.38 | 82.07 | 17.93 | 0.175 (0.052; 0.298) | 34.93 | 72.6 | 27.40 |
| Pyridoxine (mg) | 0.549 (0.460; 0.638) | 51.37 | 93.15 | 6.85 | 0.143 (0.023; 0.263) | 32.19 | 69.86 | 30.14 |
| Folate (μg) | 0.331 (0.225; 0.438) | 38.36 | 79.46 | 20.55 | 0.060 (−0.062; 0.182) | 30.14 | 64.39 | 35.62 |
| Calcium (mg) | 0.228 (0.109; 0.346) | 36.30 | 74.66 | 25.34 | 0.016 (−1.00; 0.133) | 23.40 | 62.44 | 33.56 |
| Iron (mg) | 0.359 (0.246; 0.473) | 43.15 | 80.14 | 19.86 | 0.181 (0.059; 0.303) | 35.62 | 72.61 | 27.40 |
| Magnesium (mg) | 0.523 (0.427; 0.620) | 51.37 | 90.41 | 9.59 | 0.096 (−0.024; 0.216) | 32.19 | 66.44 | 33.56 |
| Phosphorus (mg) | 0.447 (0.344; 0.551) | 45.89 | 88.36 | 11.64 | 0.055 (− 0.063; 0.173) | 28.08 | 62.33 | 37.67 |
| Potassium (mg) | 0.433 (0.334; 0.533) | 42.47 | 88.36 | 11.64 | 0.236 (0.119; 0.354) | 34.93 | 77.4 | 22.60 |
| Sodium (mg)a | 0.469 (0.361; 0.571) | 51.03 | 85.51 | 14.48 | 0.440 (0.327; 0.552) | 50.00 | 82.88 | 17.12 |
| Zinc (mg) | 0.096 (−0.30; 0.223) | 31.51 | 68.5 | 31.51 | 0.142 (0.018; 0.267) | 32.88 | 69.87 | 30.14 |
| Mean | 0.349 | 40.62 | 81.92 | 18.07 | 0.191 | 34.15 | 73.03 | 26.68 |
Weighted k was performed between Last FFQ & average of 24-h;aincluded cooking salt