Data
135,618 items of data are available, covering 118,658 participants.
Some values have special meanings defined by Data-Coding
100353.
Defined-instances run from 0 to 3, labelled using Instancing
2.
Units of measurement are cigarettes/day.
Maximum | 140 |
Decile 9 | 30 |
Decile 8 | 25 |
Decile 7 | 20 |
Decile 6 | 20 |
Median | 20 |
Decile 4 | 15 |
Decile 3 | 15 |
Decile 2 | 10 |
Decile 1 | 10 |
Minimum | 1 |
|
|
- There are 66 distinct values.
- Mean = 18.8613
- Std.dev = 10.3207
- 1843 items above graph maximum of 50
- 188 items have value -10 (Less than one a day)
- 876 items have value -1 (Do not know)
|
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
115,450 participants, 115,450 items
Maximum | 140 |
Decile 9 | 30 |
Decile 8 | 25 |
Decile 7 | 20 |
Decile 6 | 20 |
Median | 20 |
Decile 4 | 15 |
Decile 3 | 15 |
Decile 2 | 10 |
Decile 1 | 10 |
Minimum | 1 |
|
|
- There are 64 distinct values.
- Mean = 19.0712
- Std.dev = 10.4999
- 1698 items above graph maximum of 50
- 164 items have value -10 (Less than one a day)
- 716 items have value -1 (Do not know)
|
Instance 1 : First repeat assessment visit (2012-13)
4,770 participants, 4,770 items
Maximum | 100 |
Decile 9 | 30 |
Decile 8 | 20 |
Decile 7 | 20 |
Decile 6 | 20 |
Median | 20 |
Decile 4 | 15 |
Decile 3 | 15 |
Decile 2 | 10 |
Decile 1 | 9 |
Minimum | 1 |
|
|
- There are 36 distinct values.
- Mean = 18.5453
- Std.dev = 9.70309
- 51 items above graph maximum of 51
- 4 items have value -10 (Less than one a day)
- 33 items have value -1 (Do not know)
|
Instance 2 : Imaging visit (2014+)
14,245 participants, 14,245 items
Maximum | 120 |
Decile 9 | 30 |
Decile 8 | 20 |
Decile 7 | 20 |
Decile 6 | 20 |
Median | 18 |
Decile 4 | 15 |
Decile 3 | 12 |
Decile 2 | 10 |
Decile 1 | 8 |
Minimum | 1 |
|
|
- There are 43 distinct values.
- Mean = 17.3701
- Std.dev = 8.95437
- 88 items above graph maximum of 52
- 20 items have value -10 (Less than one a day)
- 119 items have value -1 (Do not know)
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Instance 3 : First repeat imaging visit (2019+)
1,153 participants, 1,153 items
Maximum | 80 |
Decile 9 | 30 |
Decile 8 | 20 |
Decile 7 | 20 |
Decile 6 | 20 |
Median | 20 |
Decile 4 | 15 |
Decile 3 | 12 |
Decile 2 | 10 |
Decile 1 | 8 |
Minimum | 1 |
|
|
- There are 27 distinct values.
- Mean = 17.5328
- Std.dev = 8.64744
- 5 items above graph maximum of 52
- 8 items have value -1 (Do not know)
|
Notes
ACE touchscreen question "About how many cigarettes did you smoke on average each day? "
The following checks were performed:
- If answer < 1 then rejected
- If answer > 150 then rejected
- If answer > 100 then participant asked to confirm
If the participant activated the Help button they were shown the message:
Count the total number of cigarettes (including both hand-rolled and manufactured cigarettes if both were smoked) For hand-rolled cigarettes: - One ounce of tobacco makes about 30 cigarettes - One gram of tobacco makes about 1 cigarette
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Field 2887 was collected from participants who indicated that in the past they smoked on most or all days, as defined by their answers to Field 1249 and they smoked manufactured or hand-rolled cigarettes in the past, as defined by their answers to Field 1249
Coding 100353 defines 2 special values:
- -10 represents "Less than one a day"
- -1 represents "Do not know"
2 Related Data-Fields
Field ID | Description | Relationship |
1249 | Past tobacco smoking | Field 1249 affects who was asked to answer Current Field |
2877 | Type of tobacco previously smoked | Field 2877 affects who was asked to answer Current Field |