: Data-Field 3456

Data-Field 3456

Description:	Number of cigarettes currently smoked daily (current cigarette smokers)
Category:	Assessment centre ⏵ Touchscreen ⏵ Lifestyle and environment ⏵ Smoking
	Lifestyle

Participants

36,845

Value Type

Integer, cigarettes/day

Both sexes

Jan 2012

38,755

Data

Defined (4)

Sep 2024

Complete

Primary

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Data

38,755 items of data are available, covering 36,845 participants.
Some values have special meanings defined by Data-Coding 100355.
Defined-instances run from 0 to 3, labelled using Instancing 2.
Units of measurement are cigarettes/day.

Maximum	140
Decile 9	25
Decile 8	20
Decile 7	20
Decile 6	15
Median	15
Decile 4	12
Decile 3	10
Decile 2	8
Decile 1	5
Minimum	1

There are 53 distinct values.
Mean = 15.3716
Std.dev = 8.42729
189 items above graph maximum of 45
13 items have value -10 (Less than one a day)
58 items have value -3 (Prefer not to answer)
276 items have value -1 (Do not know)

4 Instances

Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
36,453 participants, 36,453 items

Maximum	140
Decile 9	25
Decile 8	20
Decile 7	20
Decile 6	16
Median	15
Decile 4	12
Decile 3	10
Decile 2	10
Decile 1	5
Minimum	1

There are 53 distinct values.
Mean = 15.5438
Std.dev = 8.44677
183 items above graph maximum of 45
9 items have value -10 (Less than one a day)
55 items have value -3 (Prefer not to answer)
265 items have value -1 (Do not know)

Instance 1 : First repeat assessment visit (2012-13)
579 participants, 579 items

Maximum	60
Decile 9	25
Decile 8	20
Decile 7	18
Decile 6	15
Median	12
Decile 4	10
Decile 3	10
Decile 2	7
Decile 1	5
Minimum	1

There are 31 distinct values.
Mean = 13.8663
Std.dev = 8.11257
1 item above graph maximum of 45
1 items have value -3 (Prefer not to answer)
2 items have value -1 (Do not know)

Instance 2 : Imaging visit (2014+)
1,593 participants, 1,593 items

Maximum	70
Decile 9	20
Decile 8	20
Decile 7	15
Decile 6	15
Median	10
Decile 4	10
Decile 3	8
Decile 2	5
Decile 1	4
Minimum	1

There are 30 distinct values.
Mean = 12.1709
Std.dev = 7.30354
14 items above graph maximum of 36
3 items have value -10 (Less than one a day)
1 items have value -3 (Prefer not to answer)
9 items have value -1 (Do not know)

Instance 3 : First repeat imaging visit (2019+)
130 participants, 130 items

Maximum	70
Decile 9	20
Decile 8	20
Decile 7	15
Decile 6	15
Median	12
Decile 4	10
Decile 3	9.5
Decile 2	7
Decile 1	4
Minimum	1

There are 21 distinct values.
Mean = 13.0625
Std.dev = 8.33924
1 item above graph maximum of 36
1 items have value -10 (Less than one a day)
1 items have value -3 (Prefer not to answer)

Notes

ACE touchscreen question "About how many cigarettes do 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 are smoked)
For hand-rolled cigarettes:
- One ounce of tobacco makes about 30 cigarettes
- One gram of tobacco makes about 1 cigarette

Field 3456 was collected from participants who indicated they currently smoke tobacco on most or all days, as defined by their answers to Field 1239 and currently smoke manufactured or hand-rolled cigarettes, as defined by their answers to Field 1239

Coding 100355 defines 3 special values:

-10 represents "Less than one a day"
-1 represents "Do not know"
-3 represents "Prefer not to answer"

2 Related Data-Fields

Field ID	Description	Relationship
1239	Current tobacco smoking	Field 1239 affects who was asked to answer Current Field
3446	Type of tobacco currently smoked	Field 3446 affects who was asked to answer Current Field

2 Resources

Preview	Name	Res ID
	Screenshot from touchscreen questionnaire used to capture field 3456	100294
	Touchscreen questionnaire ordering, validation and dependencies	113241

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