Data
138,153 items of data are available, covering 123,470 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 | 79 |
| Decile 9 | 57 |
| Decile 8 | 50 |
| Decile 7 | 46 |
| Decile 6 | 42 |
| Median | 39 |
| Decile 4 | 35 |
| Decile 3 | 32 |
| Decile 2 | 29 |
| Decile 1 | 25 |
| Minimum | 8 |
|
|
- There are 71 distinct values.
- Mean = 39.7619
- Std.dev = 11.6671
- 91 items have value -3 (Prefer not to answer)
- 665 items have value -1 (Do not know)
|
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
120,971 participants, 120,971 items
| Maximum | 70 |
| Decile 9 | 57 |
| Decile 8 | 51 |
| Decile 7 | 46 |
| Decile 6 | 42 |
| Median | 39 |
| Decile 4 | 35 |
| Decile 3 | 32 |
| Decile 2 | 29 |
| Decile 1 | 25 |
| Minimum | 8 |
|
|
- There are 63 distinct values.
- Mean = 39.8597
- Std.dev = 11.6094
- 86 items have value -3 (Prefer not to answer)
- 601 items have value -1 (Do not know)
|
Instance 1 : First repeat assessment visit (2012-13)
5,067 participants, 5,067 items
| Maximum | 74 |
| Decile 9 | 57 |
| Decile 8 | 50 |
| Decile 7 | 45 |
| Decile 6 | 40 |
| Median | 38 |
| Decile 4 | 34 |
| Decile 3 | 30 |
| Decile 2 | 28 |
| Decile 1 | 25 |
| Minimum | 9 |
|
|
- There are 62 distinct values.
- Mean = 39.0967
- Std.dev = 11.919
- 1 items have value -3 (Prefer not to answer)
- 17 items have value -1 (Do not know)
|
Instance 2 : Imaging visit (2014+)
11,286 participants, 11,286 items
| Maximum | 79 |
| Decile 9 | 56 |
| Decile 8 | 50 |
| Decile 7 | 45 |
| Decile 6 | 40 |
| Median | 37 |
| Decile 4 | 34 |
| Decile 3 | 30 |
| Decile 2 | 28 |
| Decile 1 | 25 |
| Minimum | 14 |
|
|
- There are 65 distinct values.
- Mean = 39.0797
- Std.dev = 12.124
- 3 items have value -3 (Prefer not to answer)
- 46 items have value -1 (Do not know)
|
Instance 3 : First repeat imaging visit (2019+)
829 participants, 829 items
| Maximum | 75 |
| Decile 9 | 55 |
| Decile 8 | 50 |
| Decile 7 | 45 |
| Decile 6 | 40.5 |
| Median | 38 |
| Decile 4 | 35 |
| Decile 3 | 30 |
| Decile 2 | 27 |
| Decile 1 | 24 |
| Minimum | 14 |
|
|
- There are 55 distinct values.
- Mean = 38.8718
- Std.dev = 11.6765
- 1 items have value -3 (Prefer not to answer)
- 1 items have value -1 (Do not know)
|
Notes
ACE touchscreen question "How old were you when you last smoked 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 2897 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
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 |
|---|
| 1249 | Past tobacco smoking | Current Field 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 |
0 Tabulations
There are no tabulations involving field 2897.
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