Data
315,741 items of data are available, covering 286,530 participants.
Some values have special meanings defined by Data-Coding
100298.
Defined-instances run from 0 to 3, labelled using Instancing
2.
Units of measurement are times.
| Maximum | 200 |
| Decile 9 | 5 |
| Decile 8 | 5 |
| Decile 7 | 5 |
| Decile 6 | 5 |
| Median | 5 |
| Decile 4 | 5 |
| Decile 3 | 4 |
| Decile 2 | 3 |
| Decile 1 | 2 |
| Minimum | 0 |
|
|
- There are 63 distinct values.
- Mean = 4.23757
- Std.dev = 2.16564
- 3913 items above graph maximum of 8
- 2770 items have value -10 (Less than once a week)
- 1314 items have value -3 (Prefer not to answer)
- 2197 items have value -1 (Do not know)
|
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
284,746 participants, 284,746 items
| Maximum | 200 |
| Decile 9 | 5 |
| Decile 8 | 5 |
| Decile 7 | 5 |
| Decile 6 | 5 |
| Median | 5 |
| Decile 4 | 5 |
| Decile 3 | 4 |
| Decile 2 | 3 |
| Decile 1 | 2 |
| Minimum | 0 |
|
|
- There are 60 distinct values.
- Mean = 4.28794
- Std.dev = 2.12735
- 3507 items above graph maximum of 8
- 2244 items have value -10 (Less than once a week)
- 1214 items have value -3 (Prefer not to answer)
- 1990 items have value -1 (Do not know)
|
Instance 1 : First repeat assessment visit (2012-13)
8,299 participants, 8,299 items
| Maximum | 80 |
| Decile 9 | 5 |
| Decile 8 | 5 |
| Decile 7 | 5 |
| Decile 6 | 5 |
| Median | 5 |
| Decile 4 | 4 |
| Decile 3 | 3 |
| Decile 2 | 2 |
| Decile 1 | 0 |
| Minimum | 0 |
|
|
- There are 23 distinct values.
- Mean = 3.93289
- Std.dev = 2.45658
- 30 items above graph maximum of 10
- 101 items have value -10 (Less than once a week)
- 26 items have value -3 (Prefer not to answer)
- 51 items have value -1 (Do not know)
|
Instance 2 : Imaging visit (2014+)
20,574 participants, 20,574 items
| Maximum | 90 |
| Decile 9 | 5 |
| Decile 8 | 5 |
| Decile 7 | 5 |
| Decile 6 | 5 |
| Median | 4 |
| Decile 4 | 4 |
| Decile 3 | 3 |
| Decile 2 | 2 |
| Decile 1 | 0 |
| Minimum | 0 |
|
|
- There are 32 distinct values.
- Mean = 3.73156
- Std.dev = 2.46934
- 82 items above graph maximum of 10
- 387 items have value -10 (Less than once a week)
- 68 items have value -3 (Prefer not to answer)
- 144 items have value -1 (Do not know)
|
Instance 3 : First repeat imaging visit (2019+)
2,122 participants, 2,122 items
| Maximum | 21 |
| Decile 9 | 5 |
| Decile 8 | 5 |
| Decile 7 | 5 |
| Decile 6 | 5 |
| Median | 4 |
| Decile 4 | 3 |
| Decile 3 | 3 |
| Decile 2 | 2 |
| Decile 1 | 0 |
| Minimum | 0 |
|
|
- There are 17 distinct values.
- Mean = 3.51694
- Std.dev = 2.07739
- 8 items above graph maximum of 10
- 38 items have value -10 (Less than once a week)
- 6 items have value -3 (Prefer not to answer)
- 12 items have value -1 (Do not know)
|
Notes
ACE touchscreen question "How many times a WEEK do you travel from home to your main work? (count outward journeys only; put 0 if you always work from home)"
The following checks were performed:
- If answer < 0 then rejected
- If answer > 999 then rejected
- If answer > 99 then participant asked to confirm
If the participant activated the Help button they were shown the message:
If the number of times varies each week, take an average over the last 4 weeks.
If you only work from home please enter 0
|
Field 777 was collected from the participants who indicated they were in paid employment or self-employed, as defined by their answers to Field 6142
Coding 100298 defines 3 special values:
- -10 represents "Less than once a week"
- -1 represents "Do not know"
- -3 represents "Prefer not to answer"
