Data
603,841 items of data are available, covering 501,291 participants.
Some values have special meanings defined by Data-Coding
100329.
Defined-instances run from 0 to 3, labelled using Instancing
2.
Units of measurement are hours/day.
Maximum | 24 |
Decile 9 | 2 |
Decile 8 | 2 |
Decile 7 | 1 |
Decile 6 | 1 |
Median | 1 |
Decile 4 | 1 |
Decile 3 | 0 |
Decile 2 | 0 |
Decile 1 | 0 |
Minimum | 0 |
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- There are 22 distinct values.
- Mean = 1.17722
- Std.dev = 1.38313
- 11424 items above graph maximum of 4
- 195434 items have value -10 (Less than an hour a day)
- 2654 items have value -3 (Prefer not to answer)
- 7148 items have value -1 (Do not know)
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4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
501,229 participants, 501,229 items
Maximum | 24 |
Decile 9 | 2 |
Decile 8 | 2 |
Decile 7 | 1 |
Decile 6 | 1 |
Median | 1 |
Decile 4 | 1 |
Decile 3 | 0 |
Decile 2 | 0 |
Decile 1 | 0 |
Minimum | 0 |
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|
- There are 22 distinct values.
- Mean = 1.1948
- Std.dev = 1.42367
- 10442 items above graph maximum of 4
- 153639 items have value -10 (Less than an hour a day)
- 2470 items have value -3 (Prefer not to answer)
- 6334 items have value -1 (Do not know)
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Instance 1 : First repeat assessment visit (2012-13)
20,333 participants, 20,333 items
Maximum | 11 |
Decile 9 | 2 |
Decile 8 | 2 |
Decile 7 | 1 |
Decile 6 | 1 |
Median | 1 |
Decile 4 | 1 |
Decile 3 | 1 |
Decile 2 | 0 |
Decile 1 | 0 |
Minimum | 0 |
|
|
- There are 12 distinct values.
- Mean = 1.14255
- Std.dev = 1.12328
- 206 items above graph maximum of 4
- 8223 items have value -10 (Less than an hour a day)
- 36 items have value -3 (Prefer not to answer)
- 155 items have value -1 (Do not know)
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Instance 2 : Imaging visit (2014+)
75,333 participants, 75,333 items
Maximum | 20 |
Decile 9 | 2 |
Decile 8 | 2 |
Decile 7 | 1 |
Decile 6 | 1 |
Median | 1 |
Decile 4 | 1 |
Decile 3 | 1 |
Decile 2 | 0 |
Decile 1 | 0 |
Minimum | 0 |
|
|
- There are 18 distinct values.
- Mean = 1.06317
- Std.dev = 1.12522
- 716 items above graph maximum of 4
- 30626 items have value -10 (Less than an hour a day)
- 139 items have value -3 (Prefer not to answer)
- 621 items have value -1 (Do not know)
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Instance 3 : First repeat imaging visit (2019+)
6,946 participants, 6,946 items
Maximum | 12 |
Decile 9 | 2 |
Decile 8 | 1 |
Decile 7 | 1 |
Decile 6 | 1 |
Median | 1 |
Decile 4 | 1 |
Decile 3 | 1 |
Decile 2 | 0 |
Decile 1 | 0 |
Minimum | 0 |
|
|
- There are 12 distinct values.
- Mean = 1.04301
- Std.dev = 1.05965
- 60 items above graph maximum of 4
- 2946 items have value -10 (Less than an hour a day)
- 9 items have value -3 (Prefer not to answer)
- 38 items have value -1 (Do not know)
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Notes
ACE touchscreen question "In a typical DAY, how many hours do you spend driving?"
The following checks were performed:
- If answer < 0 then rejected
- If answer > 24 then rejected
- If answer > 6 then participant asked to confirm
If the participant activated the Help button they were shown the message:
If the time you spend driving varies a lot, give the average time for a 24 hour day in the last 4 weeks. Include driving a car, bus, motorcycle, boat, truck etc. Include all the driving that you do as part of work, getting to work or outside of work. If you do not drive please enter 0.
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Coding 100329 defines 3 special values:
- -10 represents "Less than an hour a day"
- -1 represents "Do not know"
- -3 represents "Prefer not to answer"
0 Related Data-Fields
There are no related data-fields