Data
592,090 items of data are available, covering 501,494 participants.
Some values have special meanings defined by Data-Coding
100373.
Defined-instances run from 0 to 3, labelled using Instancing
2.
Units of measurement are cups/day.
| Maximum | 80 |
| Decile 9 | 5 |
| Decile 8 | 4 |
| Decile 7 | 3 |
| Decile 6 | 2 |
| Median | 2 |
| Decile 4 | 1 |
| Decile 3 | 1 |
| Decile 2 | 0 |
| Decile 1 | 0 |
| Minimum | 0 |
|
|
- There are 42 distinct values.
- Mean = 2.13584
- Std.dev = 2.09292
- 1509 items above graph maximum of 10
- 42555 items have value -10 (Less than one)
- 416 items have value -3 (Prefer not to answer)
- 1008 items have value -1 (Do not know)
|
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
501,472 participants, 501,472 items
| Maximum | 80 |
| Decile 9 | 5 |
| Decile 8 | 4 |
| Decile 7 | 3 |
| Decile 6 | 2 |
| Median | 2 |
| Decile 4 | 1 |
| Decile 3 | 1 |
| Decile 2 | 0 |
| Decile 1 | 0 |
| Minimum | 0 |
|
|
- There are 41 distinct values.
- Mean = 2.13368
- Std.dev = 2.12666
- 1372 items above graph maximum of 10
- 36301 items have value -10 (Less than one)
- 401 items have value -3 (Prefer not to answer)
- 968 items have value -1 (Do not know)
|
Instance 1 : First repeat assessment visit (2012-13)
20,334 participants, 20,334 items
| Maximum | 36 |
| Decile 9 | 5 |
| Decile 8 | 4 |
| Decile 7 | 3 |
| Decile 6 | 2 |
| Median | 2 |
| Decile 4 | 1 |
| Decile 3 | 1 |
| Decile 2 | 0 |
| Decile 1 | 0 |
| Minimum | 0 |
|
|
- There are 23 distinct values.
- Mean = 2.18861
- Std.dev = 2.02426
- 46 items above graph maximum of 10
- 1512 items have value -10 (Less than one)
- 2 items have value -3 (Prefer not to answer)
- 9 items have value -1 (Do not know)
|
Instance 2 : Imaging visit (2014+)
64,924 participants, 64,924 items
| Maximum | 70 |
| Decile 9 | 4 |
| Decile 8 | 3 |
| Decile 7 | 3 |
| Decile 6 | 2 |
| Median | 2 |
| Decile 4 | 1 |
| Decile 3 | 1 |
| Decile 2 | 1 |
| Decile 1 | 0 |
| Minimum | 0 |
|
|
- There are 25 distinct values.
- Mean = 2.13444
- Std.dev = 1.86129
- 351 items above graph maximum of 8
- 4395 items have value -10 (Less than one)
- 12 items have value -3 (Prefer not to answer)
- 29 items have value -1 (Do not know)
|
Instance 3 : First repeat imaging visit (2019+)
5,360 participants, 5,360 items
| Maximum | 15 |
| Decile 9 | 5 |
| Decile 8 | 3 |
| Decile 7 | 3 |
| Decile 6 | 2 |
| Median | 2 |
| Decile 4 | 1 |
| Decile 3 | 1 |
| Decile 2 | 1 |
| Decile 1 | 0 |
| Minimum | 0 |
|
|
- There are 16 distinct values.
- Mean = 2.15449
- Std.dev = 1.81843
- 7 items above graph maximum of 10
- 347 items have value -10 (Less than one)
- 1 items have value -3 (Prefer not to answer)
- 2 items have value -1 (Do not know)
|
Notes
ACE touchscreen question "How many cups of coffee do you drink each DAY? (Include decaffeinated coffee)"
The following checks were performed:
- If answer < 0 then rejected
- If answer > 99 then rejected
- If answer > 10 then participant asked to confirm
If the participant activated the Help button they were shown the message:
Please provide an average considering your intake over the last year.
If you are unsure, please provide an estimate or select Do not know.
|
Coding 100373 defines 3 special values:
- -10 represents "Less than one"
- -1 represents "Do not know"
- -3 represents "Prefer not to answer"
