Table 3.
Cross-classification of quartiles of daily energy intake from processed food categories by FFQ and WDR (n = 100).
| Correctly Classified 1 | Correctly or Adjacently Classified 2 | Correct Extremes 3 | Grossly Misclassified 4 | |
|---|---|---|---|---|
| Chance | 25% | 62.5% | 12.5% | 12.5% |
| MPF | ||||
| EI (kJ) | 23 | 70 | 15 | 9 |
| EI (%) | 33 | 72 | 19 | 7 |
| PCI | ||||
| EI (kJ) | 31 | 67 | 13 | 14 |
| EI (%) | 30 | 66 | 15 | 12 |
| PF | ||||
| EI (kJ) | 25 | 70 | 13 | 13 |
| EI (%) | 29 | 68 | 13 | 9 |
| UPF | ||||
| EI (kJ) | 29 | 73 | 18 | 6 |
| EI (%) | 32 | 74 | 20 | 4 |
1 Correctly classified = % of children with WDR and FFQ intakes in the same quartile; 2 correctly or adjacently classified = % of children with WDR and FFQ intakes in the same or adjacent quartiles; 3 correct extremes = % of children with WDR and FFQ intakes correctly classified to the lowest and highest quartiles; 4 grossly misclassified = % of children with WDR intakes in the highest quartile and FFQ intakes in the lowest quartile, or vice versa. Abbreviations: EI, energy intake; FFQ, food frequency questionnaire; kJ, kilojoules; MPF, minimally processed food; PCI, processed culinary ingredient; PF, processed food; UPF, ultra-processed food; WDR, weighed diet record.