Data
40,951 items of data are available, covering 39,518 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 | 69 |
| Decile 9 | 23 |
| Decile 8 | 20 |
| Decile 7 | 18 |
| Decile 6 | 18 |
| Median | 16 |
| Decile 4 | 16 |
| Decile 3 | 15 |
| Decile 2 | 15 |
| Decile 1 | 13 |
| Minimum | 5 |
|
|
- There are 62 distinct values.
- Mean = 17.8825
- Std.dev = 5.86401
- 1206 items above graph maximum of 33
- 66 items have value -3 (Prefer not to answer)
- 429 items have value -1 (Do not know)
|
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
39,240 participants, 39,240 items
| Maximum | 69 |
| Decile 9 | 23 |
| Decile 8 | 20 |
| Decile 7 | 18 |
| Decile 6 | 18 |
| Median | 16 |
| Decile 4 | 16 |
| Decile 3 | 15 |
| Decile 2 | 14 |
| Decile 1 | 13 |
| Minimum | 5 |
|
|
- There are 62 distinct values.
- Mean = 17.8422
- Std.dev = 5.79362
- 1116 items above graph maximum of 33
- 65 items have value -3 (Prefer not to answer)
- 414 items have value -1 (Do not know)
|
Instance 1 : First repeat assessment visit (2012-13)
648 participants, 648 items
| Maximum | 61 |
| Decile 9 | 24 |
| Decile 8 | 20 |
| Decile 7 | 19 |
| Decile 6 | 18 |
| Median | 17 |
| Decile 4 | 16 |
| Decile 3 | 15 |
| Decile 2 | 15 |
| Decile 1 | 13 |
| Minimum | 7 |
|
|
- There are 41 distinct values.
- Mean = 18.6334
- Std.dev = 7.19734
- 27 items above graph maximum of 35
- 1 items have value -3 (Prefer not to answer)
- 6 items have value -1 (Do not know)
|
Instance 2 : Imaging visit (2014+)
1,008 participants, 1,008 items
| Maximum | 62 |
| Decile 9 | 25 |
| Decile 8 | 20.5 |
| Decile 7 | 19 |
| Decile 6 | 18 |
| Median | 17 |
| Decile 4 | 16 |
| Decile 3 | 16 |
| Decile 2 | 15 |
| Decile 1 | 14 |
| Minimum | 9 |
|
|
- There are 44 distinct values.
- Mean = 18.977
- Std.dev = 7.33176
- 42 items above graph maximum of 36
- 7 items have value -1 (Do not know)
|
Instance 3 : First repeat imaging visit (2019+)
55 participants, 55 items
| Maximum | 46 |
| Decile 9 | 22 |
| Decile 8 | 20 |
| Decile 7 | 18 |
| Decile 6 | 17.5 |
| Median | 16.5 |
| Decile 4 | 16 |
| Decile 3 | 15 |
| Decile 2 | 14.5 |
| Decile 1 | 14 |
| Minimum | 8 |
|
|
- There are 15 distinct values.
- Mean = 17.6226
- Std.dev = 5.23135
- 1 item above graph maximum of 30
- 2 items have value -1 (Do not know)
|
Notes
ACE touchscreen question "How old were you when you first started smoking on most days?"
The following checks were performed:
- If answer < 5 then rejected
- If answer > Participants age then rejected
- If answer < 12 then participant asked to confirm
Field 3436 was collected from participants who indicated they currently smoke tobacco on most or all days, as defined by their answers to Field 1239
Coding 100291 defines 2 special values:
- -1 represents "Do not know"
- -3 represents "Prefer not to answer"
1 Related Data-Fields
| Field ID | Description | Relationship |
|---|
| 1239 | Current tobacco smoking | Current Field was collected from participants who indicated they currently smoke tobacco on most or all days, as defined by their answers to Field 1239 |
