Data
9,347 items of data are available, covering 8,987 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 | 80 |
| Decile 9 | 63 |
| Decile 8 | 60 |
| Decile 7 | 57 |
| Decile 6 | 54 |
| Median | 50 |
| Decile 4 | 44.5 |
| Decile 3 | 37 |
| Decile 2 | 20 |
| Decile 1 | 8 |
| Minimum | 1 |
|
|
- There are 79 distinct values.
- Mean = 42.612
- Std.dev = 20.1575
- 38 items have value -3 (Prefer not to answer)
- 1685 items have value -1 (Do not know)
|
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
8,314 participants, 8,314 items
| Maximum | 70 |
| Decile 9 | 62 |
| Decile 8 | 60 |
| Decile 7 | 56 |
| Decile 6 | 53 |
| Median | 49 |
| Decile 4 | 43 |
| Decile 3 | 35 |
| Decile 2 | 19 |
| Decile 1 | 7 |
| Minimum | 1 |
|
|
- There are 70 distinct values.
- Mean = 41.8599
- Std.dev = 19.95
- 37 items have value -3 (Prefer not to answer)
- 1551 items have value -1 (Do not know)
|
Instance 1 : First repeat assessment visit (2012-13)
258 participants, 258 items
| Maximum | 74 |
| Decile 9 | 66 |
| Decile 8 | 63 |
| Decile 7 | 60 |
| Decile 6 | 56.5 |
| Median | 54 |
| Decile 4 | 50 |
| Decile 3 | 44 |
| Decile 2 | 35 |
| Decile 1 | 11.5 |
| Minimum | 1 |
|
|
- There are 57 distinct values.
- Mean = 47.5973
- Std.dev = 18.986
- 37 items have value -1 (Do not know)
|
Instance 2 : Imaging visit (2014+)
735 participants, 735 items
| Maximum | 80 |
| Decile 9 | 70 |
| Decile 8 | 65 |
| Decile 7 | 62 |
| Decile 6 | 60 |
| Median | 56 |
| Decile 4 | 51 |
| Decile 3 | 45 |
| Decile 2 | 29 |
| Decile 1 | 10 |
| Minimum | 1 |
|
|
- There are 77 distinct values.
- Mean = 48.7859
- Std.dev = 21.1682
- 1 items have value -3 (Prefer not to answer)
- 94 items have value -1 (Do not know)
|
Instance 3 : First repeat imaging visit (2019+)
40 participants, 40 items
| Maximum | 73 |
| Decile 9 | 66 |
| Decile 8 | 63.5 |
| Decile 7 | 60 |
| Decile 6 | 56.5 |
| Median | 50 |
| Decile 4 | 42.5 |
| Decile 3 | 27 |
| Decile 2 | 8 |
| Decile 1 | 5.5 |
| Minimum | 3 |
|
|
- There are 24 distinct values.
- Mean = 42.7568
- Std.dev = 23.6648
- 3 items have value -1 (Do not know)
|
Notes
ACE touchscreen question "What was your age when the emphysema/chronic bronchitis was first diagnosed?"
The following checks were performed:
- If answer < 0 then rejected
- If answer > Participants age then rejected
- If answer < 40 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 3992 was collected from participants who indicated they were told by a doctor that they have had emphysema or chronic bronchitis, 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"
1 Related Data-Field
| Field ID | Description | Relationship |
|---|
| 6152 | Blood clot, DVT, bronchitis, emphyse ... | Current Field was collected from participants who indicated they were told by a doctor that they have had emphysema or chronic bronchitis, as defined by their answers to Field 6152 |
