Table 2.
Percentage of food-eating occasions by method of quantification on the National Children's Food Survey (NCFS), National Teens' Food Survey (NTFS) and National Adult Nutrition Survey (NANS)
| NCFS (%) | NTFS (%) | NANS (%)* | |
|---|---|---|---|
| Weighed by participant | 75·7 | 21·0 | 47·2 |
| Assigned a manufacturer's weight | 10·6 | 24·5 | 9·9 |
| Photographic food atlas( 8 ) | 5·2 | 27·7 | 15·6 |
| IUNA weights | 1·0 | 8·0 | 4·0 |
| Food Portion Sizes ( 4 , 5 ) | 2·9 | 10·0 | 10·1 |
| Household measures | 1·5 | 6·5 | 10·6 |
| Estimated | 3·1 | 2·3 | 2·6 |
IUNA, Irish Universities Nutrition Alliance.
*Data from participants aged 18–64 years only.