Numbers of Food Frequency Questionnaires (FFQ) collected, numbers of participants, and dates of data collection for each of the three analyses: Confirmatory Factor Analysis (FA); Test-retest; and Association study.
*The number of FFQs is greater than the number of study participants since some participants completed >1 FFQ. These values are numbers of FFQs, not participants, participants are indicated using (n=) notation.
†Published elsewhere(7) (note: exclusion criteria differ slightly from current analysis)