Table 1 Information to be extracted for each dietary assessment method
Dietary assessment method | Relevant information extracted |
|---|---|
Food frequency (FFQ) questionnaire | • Number of food items |
Non-weighed diet diary | • Number of days covered |
Weighed records | • Number of days covered |
24 hour recall | • Single or multiple recall • If multiple 24 hour recalls used what was the number of recalls? • Time interval between recalls |
Biochemical marker | • Name of the biochemical marker? |