| Description: | Type of special diet followed |
| Category: | Typical diet yesterday - Diet by 24-hour recall - Online follow-up |
| Participants | 58,996 | Value Type | Categorical (multiple) | Sexed | Both sexes | ||
| Item count | 112,220 | Item Type | Data | Instances | Defined (5) | ||
| Stability | Complete | Strata | Derived | Array | Yes (6) |
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Instance 1 : On-line cycle 1, February 2011 to April 2011.
22,634 participants, 24,986 items
Instance 2 : On-line cycle 2, June 2011 to September 2011.
18,959 participants, 20,865 items
Instance 3 : On-line cycle 3, October 2011 to December 2011.
22,343 participants, 24,588 items
Instance 4 : On-line cycle 4, April 2012 to June 2012.
22,441 participants, 24,665 items
Some of the self-entered data regarding special diets is inconsistent with the actual food intake reported on the same occasion by participants. For instance, around a tenth of people indicating they followed a vegan diet also answered that they had eaten meat the prevous day.
| Category ID | Description | Items |
|---|---|---|
| 1004 | Diet and alcohol summary | 0 |
| 100090 | Diet by 24-hour recall | 3 |
| 100089 | Online follow-up | 0 |
| 100097 | Typical diet yesterday | 4 |
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| Preview | Name | Res ID |
|---|---|---|
 | Online diet questionnaire screenshot wd0001 | 10107 |
 | Online 24-hour dietary recall questionnaire | 118240 |
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