Data
67,449 items of data are available, covering 59,535 participants.
Some values have special meanings defined by Data-Coding
100291.
Defined-instances run from 0 to 3, labelled using Instancing
2.
Units of measurement are years.
| Maximum | 78 |
| Decile 9 | 56 |
| Decile 8 | 50 |
| Decile 7 | 45 |
| Decile 6 | 40 |
| Median | 32 |
| Decile 4 | 25 |
| Decile 3 | 17 |
| Decile 2 | 10 |
| Decile 1 | 5 |
| Minimum | 1 |
|
|
- There are 78 distinct values.
- Mean = 31.1675
- Std.dev = 18.9028
- 56 items have value -3 (Prefer not to answer)
- 7161 items have value -1 (Do not know)
|
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
57,672 participants, 57,672 items
| Maximum | 70 |
| Decile 9 | 56 |
| Decile 8 | 50 |
| Decile 7 | 45 |
| Decile 6 | 40 |
| Median | 32 |
| Decile 4 | 25 |
| Decile 3 | 17 |
| Decile 2 | 10 |
| Decile 1 | 5 |
| Minimum | 1 |
|
|
- There are 70 distinct values.
- Mean = 31.1551
- Std.dev = 18.69
- 47 items have value -3 (Prefer not to answer)
- 6404 items have value -1 (Do not know)
|
Instance 1 : First repeat assessment visit (2012-13)
2,290 participants, 2,290 items
| Maximum | 73 |
| Decile 9 | 59 |
| Decile 8 | 51 |
| Decile 7 | 45 |
| Decile 6 | 40 |
| Median | 35 |
| Decile 4 | 28 |
| Decile 3 | 18 |
| Decile 2 | 10 |
| Decile 1 | 5 |
| Minimum | 1 |
|
|
- There are 73 distinct values.
- Mean = 32.4404
- Std.dev = 19.6464
- 210 items have value -1 (Do not know)
|
Instance 2 : Imaging visit (2014+)
6,898 participants, 6,898 items
| Maximum | 78 |
| Decile 9 | 60 |
| Decile 8 | 50 |
| Decile 7 | 45 |
| Decile 6 | 38 |
| Median | 30 |
| Decile 4 | 23 |
| Decile 3 | 15 |
| Decile 2 | 9 |
| Decile 1 | 5 |
| Minimum | 1 |
|
|
- There are 78 distinct values.
- Mean = 31.0807
- Std.dev = 20.2174
- 9 items have value -3 (Prefer not to answer)
- 517 items have value -1 (Do not know)
|
Instance 3 : First repeat imaging visit (2019+)
589 participants, 589 items
| Maximum | 73 |
| Decile 9 | 55 |
| Decile 8 | 50 |
| Decile 7 | 42 |
| Decile 6 | 34 |
| Median | 26 |
| Decile 4 | 19 |
| Decile 3 | 12 |
| Decile 2 | 8 |
| Decile 1 | 5 |
| Minimum | 1 |
|
|
- There are 70 distinct values.
- Mean = 28.5564
- Std.dev = 19.6107
- 30 items have value -1 (Do not know)
|
Notes
ACE touchscreen question "What was your age when the asthma was first diagnosed?"
The following checks were performed:
- If answer < 0 then rejected
- If answer > Participants age then rejected
- If answer < 10 then participant asked to confirm
- If answer > 69 then participant asked to confirm
If the participant activated the Help button they were shown the message:
If you are unsure, please provide an estimate or select Do not know.
|
Field 3786 was collected from participants who indicated they were told by a doctor that they have had asthma, as defined by their answers to Field 6152
Coding 100291 defines 2 special values:
- -1 represents "Do not know"
- -3 represents "Prefer not to answer"
