Data
1,928 items of data are available, covering 1,833 participants.
Some values have special meanings defined by Data-Coding 
100353.
Defined-instances run from 0 to 3, labelled using Instancing 
2.
| 
| Maximum | 120 |  | Decile 9 | 30 |  | Decile 8 | 20 |  | Decile 7 | 20 |  | Decile 6 | 20 |  | Median | 20 |  | Decile 4 | 15 |  | Decile 3 | 10 |  | Decile 2 | 10 |  | Decile 1 | 8 |  | Minimum | 1 |  |   | 
There are 31 distinct values.Mean = 17.787Std.dev = 10.220625 items above graph maximum of 5220 items have value -10 (Less than one a day)49 items have value -1 (Do not know) | 
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
1,786 participants, 1,786 items
| 
| Maximum | 120 |  | 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 31 distinct values.Mean = 17.913Std.dev = 10.371425 items above graph maximum of 5216 items have value -10 (Less than one a day)46 items have value -1 (Do not know) | 
Instance 1 : First repeat assessment visit (2012-13)
42 participants, 42 items
| 
| Maximum | 40 |  | Decile 9 | 20 |  | Decile 8 | 20 |  | Decile 7 | 20 |  | Decile 6 | 15 |  | Median | 15 |  | Decile 4 | 15 |  | Decile 3 | 10 |  | Decile 2 | 10 |  | Decile 1 | 8 |  | Minimum | 3 |  |   | 
There are 10 distinct values.Mean = 16.025Std.dev = 7.926182 items above graph maximum of 321 items have value -10 (Less than one a day)1 items have value -1 (Do not know) | 
Instance 2 : Imaging visit (2014+)
86 participants, 86 items
| 
| Maximum | 40 |  | Decile 9 | 25 |  | Decile 8 | 20 |  | Decile 7 | 20 |  | Decile 6 | 20 |  | Median | 15 |  | Decile 4 | 14.5 |  | Decile 3 | 10 |  | Decile 2 | 10 |  | Decile 1 | 9 |  | Minimum | 1 |  |   | 
There are 13 distinct values.Mean = 16.1605Std.dev = 7.751473 items have value -10 (Less than one a day)2 items have value -1 (Do not know) | 
Instance 3 : First repeat imaging visit (2019+)
14 participants, 14 items
Too few values for statistical summary.
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
 
 | 
Field 6183 was collected from participants who indicated they currently smoke cigars and pipes, as defined by their answers to Field 3446 and previously smoked cigarettes on most or all days, as defined by their answers to Field 3446
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 | 
|---|
| 5959 | Previously smoked cigarettes on most ... | Field 5959  affects who was asked to answer  Current Field | 
| 3446 | Type of tobacco currently smoked | Field 3446  affects who was asked to answer  Current Field |