Data
4,210 items of data are available, covering 3,900 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 | 84 |
| Decile 9 | 74 |
| Decile 8 | 70 |
| Decile 7 | 68 |
| Decile 6 | 65 |
| Median | 64 |
| Decile 4 | 61 |
| Decile 3 | 59 |
| Decile 2 | 55 |
| Decile 1 | 49 |
| Minimum | 0 |
|
|
- There are 76 distinct values.
- Mean = 61.6219
- Std.dev = 11.714
- 7 items have value -3 (Prefer not to answer)
- 286 items have value -1 (Do not know)
|
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
1,314 participants, 1,314 items
| Maximum | 69 |
| Decile 9 | 66 |
| Decile 8 | 64 |
| Decile 7 | 62 |
| Decile 6 | 60 |
| Median | 59 |
| Decile 4 | 57 |
| Decile 3 | 54 |
| Decile 2 | 50 |
| Decile 1 | 45 |
| Minimum | 0 |
|
|
- There are 55 distinct values.
- Mean = 56.242
- Std.dev = 10.7798
- 27 items below graph minimum of 24
- 2 items have value -3 (Prefer not to answer)
- 68 items have value -1 (Do not know)
|
Instance 1 : First repeat assessment visit (2012-13)
382 participants, 382 items
| Maximum | 75 |
| Decile 9 | 69 |
| Decile 8 | 67 |
| Decile 7 | 65 |
| Decile 6 | 64 |
| Median | 62 |
| Decile 4 | 60 |
| Decile 3 | 59 |
| Decile 2 | 55 |
| Decile 1 | 50 |
| Minimum | 1 |
|
|
- There are 43 distinct values.
- Mean = 60.4126
- Std.dev = 9.41524
- 4 items below graph minimum of 31
- 16 items have value -1 (Do not know)
|
Instance 2 : Imaging visit (2014+)
2,271 participants, 2,271 items
| Maximum | 84 |
| Decile 9 | 76 |
| Decile 8 | 73 |
| Decile 7 | 70 |
| Decile 6 | 69 |
| Median | 66 |
| Decile 4 | 65 |
| Decile 3 | 62 |
| Decile 2 | 59 |
| Decile 1 | 53 |
| Minimum | 1 |
|
|
- There are 64 distinct values.
- Mean = 64.6896
- Std.dev = 11.3884
- 33 items below graph minimum of 30
- 5 items have value -3 (Prefer not to answer)
- 185 items have value -1 (Do not know)
|
Instance 3 : First repeat imaging visit (2019+)
243 participants, 243 items
| Maximum | 83 |
| Decile 9 | 76 |
| Decile 8 | 73 |
| Decile 7 | 70.5 |
| Decile 6 | 69 |
| Median | 67 |
| Decile 4 | 65 |
| Decile 3 | 63 |
| Decile 2 | 58.5 |
| Decile 1 | 52.5 |
| Minimum | 0 |
|
|
- There are 41 distinct values.
- Mean = 64.9469
- Std.dev = 11.891
- 4 items below graph minimum of 29
- 17 items have value -1 (Do not know)
|
Notes
ACE touchscreen question "What was your age when macular degeneration 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 5923 was collected from participants who indicated they have macular degeneration, 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 macular degeneration, as defined by their answers to Field 6148 |
