Table 3.
Estimates of the correlation between true and FFQ-reported intakes (ρ QT) and the attenuation factor (λ QT), with standard errors, in the model adjusted for measurement error (ME) and the model adjusted for both ME and energy (n 157); youth aged 10–24 years with type 1 diabetes, SEARCH for Diabetes in Youth Nutrition Ancillary Study
| ME adjusted | ME and energy adjusted | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Pearson’s ρ | ρ QT | se | λ QT | se | ρ QT | se | λ QT | se | |
| Food group | |||||||||
| All Bread, Cereal, Rice and Pasta | 0·15 | 0·21 | 0·08 | 0·15 | 0·06 | 0·26 | 0·07 | 0·18 | 0·05 |
| Bread, cereal, rice and pasta (high fibre)† | 0·06 | 0·16 | 0·07 | 0·19 | 0·08 | 0·12 | 0·07 | 0·12 | 0·07 |
| Bread, cereal, rice, and pasta (low fibre) | 0·17 | 0·25 | 0·08 | 0·19 | 0·06 | 0·30 | 0·07 | 0·23 | 0·06 |
| All Fruits and Vegetables | 0·22 | 0·45 | 0·06 | 0·29 | 0·05 | 0·41 | 0·06 | 0·30 | 0·05 |
| All Vegetables | 0·24 | 0·48 | 0·06 | 0·32 | 0·05 | 0·56 | 0·04 | 0·37 | 0·04 |
| Vegetable (tomato)† | 0·15 | 0·32 | 0·07 | 0·24 | 0·05 | 0·27 | 0·07 | 0·15 | 0·04 |
| Vegetable (dark green, cruciferous)† | 0·04 | 0·27 | 0·08 | 0·19 | 0·06 | 0·36 | 0·06 | 0·19 | 0·04 |
| Vegetable (deep yellow)† | 0·56 | 0·67 | 0·05 | 0·53 | 0·05 | 0·72 | 0·03 | 0·49 | 0·03 |
| Vegetable (potatoes)† | 0·34 | 0·57 | 0·05 | 0·47 | 0·05 | 0·60 | 0·04 | 0·33 | 0·03 |
| Vegetable (other)† | 0·27 | 0·53 | 0·05 | 0·42 | 0·05 | 0·51 | 0·05 | 0·36 | 0·04 |
| All Fruit† | 0·18 | 0·34 | 0·06 | 0·23 | 0·05 | 0·33 | 0·06 | 0·20 | 0·04 |
| Fruit and fruit juice (citrus)† | 0·24 | 0·39 | 0·07 | 0·22 | 0·04 | 0·31 | 0·07 | 0·18 | 0·04 |
| Fruit and fruit juice (other)† | 0·18 | 0·31 | 0·06 | 0·23 | 0·05 | 0·34 | 0·07 | 0·21 | 0·05 |
| All Dairy† | 0·47 | 0·67 | 0·04 | 0·57 | 0·05 | 0·63 | 0·04 | 0·57 | 0·05 |
| Dairy (low fat)† | 0·60 | 0·80 | 0·02 | 0·65 | 0·03 | 0·77 | 0·03 | 0·58 | 0·04 |
| Dairy (high fat)† | 0·10 | 0·29 | 0·07 | 0·27 | 0·07 | 0·15 | 0·07 | 0·13 | 0·06 |
| All Meat, Poultry, Eggs and Beans | 0·35 | 0·42 | 0·07 | 0·24 | 0·05 | 0·48 | 0·06 | 0·31 | 0·05 |
| Meat (beef, pork, non-poultry lunch meat)† | 0·33 | 0·43 | 0·05 | 0·29 | 0·04 | 0·24 | 0·07 | 0·13 | 0·04 |
| Poultry (all)† | 0·22 | 0·53 | 0·05 | 0·23 | 0·03 | 0·63 | 0·04 | 0·21 | 0·02 |
| Poultry (low fat)† | 0·06 | 0·10 | 0·08 | 0·10 | 0·08 | 0·24 | 0·07 | 0·16 | 0·05 |
| Eggs† | 0·45 | 0·67 | 0·04 | 0·54 | 0·04 | 0·60 | 0·05 | 0·42 | 0·04 |
| Nuts and seeds† | 0·25 | 0·45 | 0·06 | 0·13 | 0·02 | 0·41 | 0·07 | 0·10 | 0·02 |
| Fats, Oils and Sweets† | 0·21 | 0·32 | 0·07 | 0·15 | 0·04 | 0·11 | 0·08 | 0·06 | 0·04 |
| Fats and oils† | 0·08 | 0·28 | 0·07 | 0·09 | 0·02 | 0·09 | 0·08 | 0·03 | 0·03 |
| Sweets and desserts | 0·30 | 0·51 | 0·06 | 0·42 | 0·06 | 0·50 | 0·05 | 0·38 | 0·05 |
| All chips, crackers, popcorn, pretzels† | 0·19 | 0·39 | 0·06 | 0·32 | 0·06 | 0·41 | 0·07 | 0·23 | 0·04 |
| Chips, high-fat crackers, popcorn† | 0·01 | 0·08 | 0·08 | 0·09 | 0·08 | −0·04 | 0·08 | −0·03 | 0·05 |
| Soda, Fruit Flavour Drink† | 0·44 | 0·54 | 0·06 | 0·36 | 0·05 | 0·51 | 0·05 | 0·28 | 0·04 |
| Nutrient | |||||||||
| Total energy | 0·36 | 0·42 | 0·06 | 0·24 | 0·04 | – | – | ||
| % Energy from carbohydrate | 0·37 | 0·48 | 0·06 | 0·37 | 0·06 | 0·48 | 0·06 | 0·34 | 0·05 |
| Total carbohydrate (g) | 0·30 | 0·39 | 0·07 | 0·21 | 0·04 | 0·45 | 0·06 | 0·30 | 0·05 |
| Starch (g) | 0·21 | 0·29 | 0·07 | 0·16 | 0·05 | 0·30 | 0·07 | 0·18 | 0·04 |
| Fructose (g) | 0·31 | 0·39 | 0·07 | 0·26 | 0·05 | 0·31 | 0·07 | 0·26 | 0·06 |
| % Energy from protein | 0·35 | 0·44 | 0·06 | 0·48 | 0·08 | 0·42 | 0·06 | 0·46 | 0·07 |
| Total protein (g) | 0·31 | 0·38 | 0·07 | 0·23 | 0·05 | 0·42 | 0·06 | 0·41 | 0·07 |
| % Energy from fat | 0·33 | 0·46 | 0·06 | 0·34 | 0·06 | 0·45 | 0·06 | 0·33 | 0·05 |
| Total fat (g) | 0·40 | 0·48 | 0·06 | 0·34 | 0·05 | 0·41 | 0·06 | 0·31 | 0·05 |
| % Energy from SFA | 0·29 | 0·40 | 0·07 | 0·35 | 0·07 | 0·42 | 0·06 | 0·37 | 0·06 |
| Saturated fat (g) | 0·42 | 0·51 | 0·06 | 0·39 | 0·06 | 0·39 | 0·06 | 0·36 | 0·07 |
| Fibre (g) | 0·25 | 0·39 | 0·06 | 0·22 | 0·04 | 0·45 | 0·06 | 0·38 | 0·06 |
| Ca (mg) | 0·16 | 0·28 | 0·07 | 0·16 | 0·04 | 0·19 | 0·07 | 0·14 | 0·05 |
| Mg (mg) | 0·26 | 0·36 | 0·06 | 0·19 | 0·04 | 0·46 | 0·05 | 0·38 | 0·05 |
| Cholesterol (mg) | 0·48 | 0·59 | 0·05 | 0·49 | 0·06 | 0·70 | 0·04 | 0·64 | 0·05 |
| Fe (mg) | 0·11 | 0·18 | 0·08 | 0·11 | 0·05 | 0·31 | 0·06 | 0·28 | 0·06 |
| Dietary folate equivalents (µg) | 0·08 | 0·11 | 0·08 | 0·08 | 0·06 | 0·26 | 0·07 | 0·27 | 0·07 |
| Vitamin C (mg) | 0·23 | 0·33 | 0·07 | 0·19 | 0·04 | 0·21 | 0·08 | 0·13 | 0·05 |
| Linoleic acid (g) | 0·26 | 0·37 | 0·06 | 0·24 | 0·05 | 0·26 | 0·08 | 0·21 | 0·06 |
| Linolenic acid (g) | 0·22 | 0·33 | 0·07 | 0·28 | 0·07 | 0·21 | 0·08 | 0·18 | 0·07 |
†
Denotes episodically consumed food (>10 % of 24 h recalls did not report consumption).