Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Preferred method
| 7-d web-based FD | 3 × 24 h DR and FFQ | |
|---|---|---|
| Preferred method (%) | 77 | 23 |
| Reasons | More flexible and convenient (can do it when you have time) | Easier and faster (interviewer does the registration) |
| Best method to capture dietary habits (%) | 83 | 17 |
| Reasons | 7 d (a whole week) is more accurate than 2 or 3 d | Gives a more precise description of the food eaten including preparation. More foods and beverages reported |
