Data
146,256 items of data are available, covering 124,248 participants.
Some values have special meanings defined by Data-Coding
100291.
Defined-instances run from 0 to 3, labelled using Instancing
2.
| Maximum | 200 |
| Decile 9 | 6 |
| 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 64 distinct values.
- Mean = 2.95515
- Std.dev = 7.37828
- 3184 items above graph maximum of 12
- 381 items have value -3 (Prefer not to answer)
- 12864 items have value -1 (Do not know)
|
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
119,964 participants, 119,964 items
| Maximum | 200 |
| Decile 9 | 6 |
| 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 61 distinct values.
- Mean = 2.959
- Std.dev = 7.50373
- 2579 items above graph maximum of 12
- 340 items have value -3 (Prefer not to answer)
- 10705 items have value -1 (Do not know)
|
Instance 1 : First repeat assessment visit (2012-13)
5,066 participants, 5,066 items
| Maximum | 100 |
| Decile 9 | 6 |
| 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 26 distinct values.
- Mean = 2.87282
- Std.dev = 5.90087
- 116 items above graph maximum of 12
- 9 items have value -3 (Prefer not to answer)
- 410 items have value -1 (Do not know)
|
Instance 2 : Imaging visit (2014+)
19,291 participants, 19,291 items
| Maximum | 200 |
| Decile 9 | 6 |
| 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 39 distinct values.
- Mean = 2.96266
- Std.dev = 6.97659
- 447 items above graph maximum of 12
- 30 items have value -3 (Prefer not to answer)
- 1587 items have value -1 (Do not know)
|
Instance 3 : First repeat imaging visit (2019+)
1,935 participants, 1,935 items
| Maximum | 200 |
| Decile 9 | 6 |
| 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 21 distinct values.
- Mean = 2.8594
- Std.dev = 6.9724
- 42 items above graph maximum of 12
- 2 items have value -3 (Prefer not to answer)
- 162 items have value -1 (Do not know)
|
Notes
ACE touchscreen question "How many times did you try to give up smoking before you were successful?"
The following checks were performed:
- If answer < 0 then rejected
- If answer > 200 then rejected
- If answer > 20 then participant asked to confirm
If the participant activated the Help button they were shown the message:
If you are unsure, please provide an estimate or select Do not know.
|
Field 2926 was collected from participants who indicated that in the past they smoked tobacco on most or all days, as defined by their answers to Field 1249 and that during the time they smoked they stopped for more than 6 months, as defined by their answers to Field 1249
Coding 100291 defines 2 special values:
- -1 represents "Do not know"
- -3 represents "Prefer not to answer"
