Data
614,420 items of data are available, covering 501,300 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 = 2.1325
- Std.dev = 2.0802
- 1540 items above graph maximum of 10
- 43894 items have value -10 (Less than one)
- 421 items have value -3 (Prefer not to answer)
- 1014 items have value -1 (Do not know)
|
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
501,268 participants, 501,268 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 = 2.13373
- Std.dev = 2.12661
- 1371 items above graph maximum of 10
- 36282 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)
20,328 participants, 20,328 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 = 2.18851
- Std.dev = 2.02443
- 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+)
84,020 participants, 84,020 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 27 distinct values.
- Mean = 2.11232
- Std.dev = 1.8317
- 429 items above graph maximum of 8
- 5547 items have value -10 (Less than one)
- 16 items have value -3 (Prefer not to answer)
- 35 items have value -1 (Do not know)
|
Instance 3 : First repeat imaging visit (2019+)
8,804 participants, 8,804 items
| Maximum | 15 |
| 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 16 distinct values.
- Mean = 2.12805
- Std.dev = 1.76237
- 44 items above graph maximum of 8
- 553 items have value -10 (Less than one)
- 2 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"
