Table 4.
The number and share of individuals classified into the same tertile and misclassified, as well as individuals of the same or conflicting iodine intake adequacy category in comparison of 3-day dietary record and IODINE-FFQ.
| IODINE-FFQ1 vs. 3-Day Dietary Record | IODINE-FFQ2 vs. 3-Day Dietary Record | IODINE-FFQ1 vs. IODINE-FFQ2 | |||
|---|---|---|---|---|---|
| Individuals classified into the same tertile | n | 34 | 31 | 65 | |
| % | 37.78 | 34.44 | 72.22 | ||
| Individuals misclassified (classified into opposite tertiles) | n | 12 | 15 | 1 | |
| % | 13.33 | 16.67 | 1.11 | ||
| Weighted κ statistic | 0.15 | 0.075 | 0.675 | ||
| Individuals of the | same iodine intake adequacy category | n | 56 | 47 | 77 |
| % | 54.90 | 52.22 | 85.56 | ||
| conflicting iodine intake adequacy category | n | 46 | 43 | 13 | |
| % | 45.10 | 47.78 | 14.44 | ||
IODINE-FFQ1—food frequency questionnaire filled out directly after conducting 3-day dietary record; IODINE-FFQ2—food frequency questionnaire filled out 6 weeks after IODINE-FFQ1.