TABLE 4.
Self-report dietary assessment tools used in relation to study design in Canadian research with nonclinical, non-Aboriginal adult populations1
| Number of studies |
|||||||
| FFQ | Screener | Record | 24-h Recall | Single question | Not stated | Multiple tools | |
| All studies | 33 | 21 | 17 | 11 | 3 | 3 | 4 |
| Cross-sectional (n = 58 studies) | 15 | 18 | 11 | 8 | 3 | 2 | 1 |
| Case-control (n = 11 studies) | 10 | — | — | — | — | — | 1 |
| Intervention/RCT2 (n = 10 studies) | 3 | — | 4 | 2 | — | 1 | — |
| Cohort (n = 10 studies) | 4 | 2 | 2 | — | — | — | 2 |
| Surveillance (n = 3 studies) | 1 | 1 | — | 1 | — | — | — |
1
n = 92 studies. The numbers vary slightly from Table 3, which includes repeated citations for studies that used multiple tools.
2
RCT, randomized controlled trial.