Data
29,140 items of data are available, covering 22,320 participants.
Some values have special meanings defined by Data-Coding
100291.
Defined-instances run from 0 to 3, labelled using Instancing
2.
Units of measurement are years.
| Maximum | 82 |
| Decile 9 | 52 |
| Decile 8 | 45 |
| Decile 7 | 40 |
| Decile 6 | 35 |
| Median | 30 |
| Decile 4 | 26 |
| Decile 3 | 23 |
| Decile 2 | 19 |
| Decile 1 | 14 |
| Minimum | 0 |
|
|
- There are 82 distinct values.
- Mean = 31.2498
- Std.dev = 15.2544
- 71 items have value -3 (Prefer not to answer)
- 545 items have value -1 (Do not know)
|
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
20,454 participants, 20,454 items
| Maximum | 69 |
| Decile 9 | 49 |
| Decile 8 | 42 |
| Decile 7 | 38 |
| Decile 6 | 34 |
| Median | 30 |
| Decile 4 | 25 |
| Decile 3 | 22 |
| Decile 2 | 18 |
| Decile 1 | 12 |
| Minimum | 0 |
|
|
- There are 70 distinct values.
- Mean = 29.7479
- Std.dev = 14.4176
- 60 items have value -3 (Prefer not to answer)
- 418 items have value -1 (Do not know)
|
Instance 1 : First repeat assessment visit (2012-13)
1,112 participants, 1,112 items
| Maximum | 72 |
| Decile 9 | 50.5 |
| Decile 8 | 45 |
| Decile 7 | 40 |
| Decile 6 | 36 |
| Median | 33 |
| Decile 4 | 30 |
| Decile 3 | 25 |
| Decile 2 | 22 |
| Decile 1 | 18 |
| Minimum | 0 |
|
|
- There are 69 distinct values.
- Mean = 33.3963
- Std.dev = 13.1955
- 17 items have value -1 (Do not know)
|
Instance 2 : Imaging visit (2014+)
6,296 participants, 6,296 items
| Maximum | 82 |
| Decile 9 | 59 |
| Decile 8 | 51 |
| Decile 7 | 44.5 |
| Decile 6 | 38 |
| Median | 32 |
| Decile 4 | 29 |
| Decile 3 | 25 |
| Decile 2 | 20 |
| Decile 1 | 16 |
| Minimum | 0 |
|
|
- There are 82 distinct values.
- Mean = 34.8296
- Std.dev = 17.0159
- 9 items have value -3 (Prefer not to answer)
- 84 items have value -1 (Do not know)
|
Instance 3 : First repeat imaging visit (2019+)
1,278 participants, 1,278 items
| Maximum | 82 |
| Decile 9 | 60 |
| Decile 8 | 52 |
| Decile 7 | 45 |
| Decile 6 | 39 |
| Median | 34 |
| Decile 4 | 29 |
| Decile 3 | 25 |
| Decile 2 | 21 |
| Decile 1 | 17 |
| Minimum | 0 |
|
|
- There are 80 distinct values.
- Mean = 35.6064
- Std.dev = 16.6149
- 2 items have value -3 (Prefer not to answer)
- 26 items have value -1 (Do not know)
|
Notes
ACE touchscreen question "How old were you when you last ate any kind of meat? (Enter "0" if you have never eaten meat in your lifetime)"
The following checks were performed:
- If answer < 0 then rejected
- If answer > Participants age then rejected
Coding 100291 defines 2 special values:
- -1 represents "Do not know"
- -3 represents "Prefer not to answer"
