Data
531,469 items of data are available, covering 498,578 participants.
Some values have special meanings defined by Data-Coding
100329.
Defined-instances run from 0 to 2, labelled using Instancing
2.
Units of measurement are hours/day.
| Maximum | 24 |
| Decile 9 | 3 |
| 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 |
|
|
- There are 23 distinct values.
- Mean = 1.26889
- Std.dev = 1.52186
- 5198 items above graph maximum of 6
- 109231 items have value -10 (Less than an hour a day)
- 1596 items have value -3 (Prefer not to answer)
- 3230 items have value -1 (Do not know)
|
3 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
497,970 participants, 497,970 items
| Maximum | 24 |
| Decile 9 | 3 |
| 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 |
|
|
- There are 23 distinct values.
- Mean = 1.2376
- Std.dev = 1.52276
- 4872 items above graph maximum of 6
- 103396 items have value -10 (Less than an hour a day)
- 1580 items have value -3 (Prefer not to answer)
- 3134 items have value -1 (Do not know)
|
Instance 1 : First repeat assessment visit (2012-13)
20,339 participants, 20,339 items
| Maximum | 16 |
| Decile 9 | 3 |
| Decile 8 | 2 |
| Decile 7 | 2 |
| Decile 6 | 2 |
| Median | 1 |
| Decile 4 | 1 |
| Decile 3 | 1 |
| Decile 2 | 1 |
| Decile 1 | 0 |
| Minimum | 0 |
|
|
- There are 16 distinct values.
- Mean = 1.66762
- Std.dev = 1.4502
- 200 items above graph maximum of 6
- 3804 items have value -10 (Less than an hour a day)
- 11 items have value -3 (Prefer not to answer)
- 64 items have value -1 (Do not know)
|
Instance 2 : Imaging visit (2014+)
13,160 participants, 13,160 items
| Maximum | 20 |
| Decile 9 | 3 |
| Decile 8 | 2 |
| Decile 7 | 2 |
| Decile 6 | 2 |
| Median | 1 |
| Decile 4 | 1 |
| Decile 3 | 1 |
| Decile 2 | 1 |
| Decile 1 | 1 |
| Minimum | 0 |
|
|
- There are 16 distinct values.
- Mean = 1.77678
- Std.dev = 1.41668
- 309 items above graph maximum of 5
- 2031 items have value -10 (Less than an hour a day)
- 5 items have value -3 (Prefer not to answer)
- 32 items have value -1 (Do not know)
|
Notes
ACE touchscreen question "In a typical DAY, how many hours do you spend using the computer? (Do not include using a computer at work; put 0 if you do not spend any time doing it)"
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 on the computer varies a lot, give the average
time for a 24 hour day in the last 4 weeks. Remember not to include
time spent on a computer at work.
|
This question was only asked during 2006 so needs to be interpreted in the light of technological development at that time when computers would generally mean either desktop or laptop PC systems.
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
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