: 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

36,884

Value Type

Integer, cigarettes/day

Both sexes

Jan 2012

39,015

Data

Defined (4)

Aug 2025

Complete

Primary

o1 s1

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Data

39,015 items of data are available, covering 36,884 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 = 15.3409
Std.dev = 8.42288
189 items above graph maximum of 45
13 items have value -10 (Less than one a day)
59 items have value -3 (Prefer not to answer)
277 items have value -1 (Do not know)

4 Instances

Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
36,449 participants, 36,449 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 = 15.5443
Std.dev = 8.44685
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+)
1,763 participants, 1,763 items

Maximum	70
Decile 9	20
Decile 8	18
Decile 7	15
Decile 6	14
Median	10
Decile 4	10
Decile 3	8
Decile 2	5
Decile 1	4
Minimum	1

There are 30 distinct values.
Mean = 12.0166
Std.dev = 7.22831
14 items above graph maximum of 36
3 items have value -10 (Less than one a day)
2 items have value -3 (Prefer not to answer)
9 items have value -1 (Do not know)

Instance 3 : First repeat imaging visit (2019+)
224 participants, 224 items

Maximum	70
Decile 9	20
Decile 8	20
Decile 7	15
Decile 6	14
Median	10
Decile 4	10
Decile 3	8
Decile 2	6
Decile 1	4
Minimum	1

There are 23 distinct values.
Mean = 12.2443
Std.dev = 7.53177
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)
1 items have value -1 (Do not know)

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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