Data
588,333 items of data are available, covering 498,786 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 | 3 |
| Decile 8 | 2 |
| Decile 7 | 2 |
| 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 = 1.32943
- Std.dev = 1.52828
- 5865 items above graph maximum of 6
- 116635 items have value -10 (Less than an hour a day)
- 1626 items have value -3 (Prefer not to answer)
- 3401 items have value -1 (Do not know)
|
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
497,715 participants, 497,715 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 = 1.23738
- Std.dev = 1.52244
- 4867 items above graph maximum of 6
- 103356 items have value -10 (Less than an hour a day)
- 1577 items have value -3 (Prefer not to answer)
- 3131 items have value -1 (Do not know)
|
Instance 1 : First repeat assessment visit (2012-13)
20,334 participants, 20,334 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 = 1.66729
- Std.dev = 1.44997
- 200 items above graph maximum of 6
- 3803 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+)
64,924 participants, 64,924 items
| Maximum | 20 |
| Decile 9 | 4 |
| Decile 8 | 3 |
| Decile 7 | 2 |
| Decile 6 | 2 |
| Median | 1 |
| Decile 4 | 1 |
| Decile 3 | 1 |
| Decile 2 | 1 |
| Decile 1 | 1 |
| Minimum | 0 |
|
|
- There are 19 distinct values.
- Mean = 1.83295
- Std.dev = 1.47533
- 523 items above graph maximum of 7
- 8726 items have value -10 (Less than an hour a day)
- 38 items have value -3 (Prefer not to answer)
- 196 items have value -1 (Do not know)
|
Instance 3 : First repeat imaging visit (2019+)
5,360 participants, 5,360 items
| Maximum | 12 |
| Decile 9 | 4 |
| 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 13 distinct values.
- Mean = 1.79174
- Std.dev = 1.48005
- 20 items above graph maximum of 8
- 750 items have value -10 (Less than an hour a day)
- 10 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 first asked in 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. In 2019 the wording will be changed to
"In a typical DAY, how many hours do you spend using a computer/laptop, tablet or smartphone?"
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
