Data
7,455 items of data are available, covering 6,574 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 | 85 |
| Decile 9 | 70 |
| Decile 8 | 67 |
| Decile 7 | 64 |
| Decile 6 | 61 |
| Median | 60 |
| Decile 4 | 56 |
| Decile 3 | 53 |
| Decile 2 | 50 |
| Decile 1 | 43 |
| Minimum | 0 |
|
|
- There are 83 distinct values.
- Mean = 57.4415
- Std.dev = 11.9647
- 21 items have value -3 (Prefer not to answer)
- 439 items have value -1 (Do not know)
|
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
2,848 participants, 2,848 items
| Maximum | 70 |
| Decile 9 | 64 |
| Decile 8 | 62 |
| Decile 7 | 60 |
| Decile 6 | 58 |
| Median | 55 |
| Decile 4 | 52 |
| Decile 3 | 50 |
| Decile 2 | 45 |
| Decile 1 | 40 |
| Minimum | 0 |
|
|
- There are 68 distinct values.
- Mean = 52.874
- Std.dev = 11.2803
- 12 items have value -3 (Prefer not to answer)
- 145 items have value -1 (Do not know)
|
Instance 1 : First repeat assessment visit (2012-13)
524 participants, 524 items
| Maximum | 75 |
| Decile 9 | 68 |
| Decile 8 | 65 |
| Decile 7 | 64 |
| Decile 6 | 61 |
| Median | 60 |
| Decile 4 | 55 |
| Decile 3 | 52 |
| Decile 2 | 50 |
| Decile 1 | 45 |
| Minimum | 0 |
|
|
- There are 48 distinct values.
- Mean = 57.0119
- Std.dev = 10.1275
- 19 items have value -1 (Do not know)
|
Instance 2 : Imaging visit (2014+)
3,349 participants, 3,349 items
| Maximum | 85 |
| Decile 9 | 73 |
| Decile 8 | 70 |
| Decile 7 | 67 |
| Decile 6 | 65 |
| Median | 62 |
| Decile 4 | 60 |
| Decile 3 | 56 |
| Decile 2 | 52 |
| Decile 1 | 45 |
| Minimum | 0 |
|
|
- There are 75 distinct values.
- Mean = 60.4199
- Std.dev = 11.536
- 7 items have value -3 (Prefer not to answer)
- 220 items have value -1 (Do not know)
|
Instance 3 : First repeat imaging visit (2019+)
734 participants, 734 items
| Maximum | 84 |
| Decile 9 | 75 |
| Decile 8 | 72 |
| Decile 7 | 69 |
| Decile 6 | 66 |
| Median | 64 |
| Decile 4 | 60 |
| Decile 3 | 58 |
| Decile 2 | 55 |
| Decile 1 | 45.5 |
| Minimum | 0 |
|
|
- There are 52 distinct values.
- Mean = 62.1817
- Std.dev = 11.6917
- 2 items have value -3 (Prefer not to answer)
- 55 items have value -1 (Do not know)
|
Notes
ACE touchscreen question "What was your age when glaucoma 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 4689 was collected from participants who indicated they have glaucoma, as defined by their answers to Field 6148
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 |
|---|
| 6148 | Eye problems/disorders | Current Field was collected from participants who indicated they have glaucoma, as defined by their answers to Field 6148 |
2 Applications
| Application ID | Title |
|---|
| 669 | Distribution and biological, environmental and lifestyle determinants of visual function and of refractive error in adults (aged 40 to 69 years) in the UK. |
| 17435 | Exploring the genetics of irritable bowel syndrome: the ?bellygenes? initiative (project approved by bbmri-lpc) |
