Data
129,859 items of data are available, covering 114,587 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 | 110 |
| Decile 9 | 88 |
| Decile 8 | 85 |
| Decile 7 | 83 |
| Decile 6 | 81 |
| Median | 79 |
| Decile 4 | 76 |
| Decile 3 | 74 |
| Decile 2 | 72 |
| Decile 1 | 69 |
| Minimum | 60 |
|
|
- There are 49 distinct values.
- Mean = 78.6422
- Std.dev = 7.51546
- 2 items above graph maximum of 107
- 184 items have value -3 (Prefer not to answer)
- 1657 items have value -1 (Do not know)
|
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
114,450 participants, 114,450 items
| Maximum | 110 |
| Decile 9 | 87 |
| Decile 8 | 84 |
| Decile 7 | 82 |
| Decile 6 | 80 |
| Median | 78 |
| Decile 4 | 76 |
| Decile 3 | 74 |
| Decile 2 | 71 |
| Decile 1 | 68 |
| Minimum | 60 |
|
|
- There are 48 distinct values.
- Mean = 77.8674
- Std.dev = 7.33931
- 2 items above graph maximum of 106
- 176 items have value -3 (Prefer not to answer)
- 1560 items have value -1 (Do not know)
|
Instance 1 : First repeat assessment visit (2012-13)
3,112 participants, 3,112 items
| Maximum | 101 |
| Decile 9 | 90 |
| Decile 8 | 87 |
| Decile 7 | 85 |
| Decile 6 | 83 |
| Median | 82 |
| Decile 4 | 80 |
| Decile 3 | 78 |
| Decile 2 | 75 |
| Decile 1 | 73 |
| Minimum | 64 |
|
|
- There are 38 distinct values.
- Mean = 81.5402
- Std.dev = 6.67077
- 2 items have value -3 (Prefer not to answer)
- 24 items have value -1 (Do not know)
|
Instance 2 : Imaging visit (2014+)
10,626 participants, 10,626 items
| Maximum | 107 |
| Decile 9 | 93 |
| Decile 8 | 90 |
| Decile 7 | 88 |
| Decile 6 | 86 |
| Median | 85 |
| Decile 4 | 83 |
| Decile 3 | 82 |
| Decile 2 | 80 |
| Decile 1 | 77 |
| Minimum | 65 |
|
|
- There are 40 distinct values.
- Mean = 84.8508
- Std.dev = 5.95684
- 5 items have value -3 (Prefer not to answer)
- 64 items have value -1 (Do not know)
|
Instance 3 : First repeat imaging visit (2019+)
1,671 participants, 1,671 items
| Maximum | 104 |
| Decile 9 | 93 |
| Decile 8 | 91 |
| Decile 7 | 89 |
| Decile 6 | 88 |
| Median | 86 |
| Decile 4 | 85 |
| Decile 3 | 83 |
| Decile 2 | 82 |
| Decile 1 | 79 |
| Minimum | 69 |
|
|
- There are 34 distinct values.
- Mean = 86.3697
- Std.dev = 5.35939
- 1 items have value -3 (Prefer not to answer)
- 9 items have value -1 (Do not know)
|
Notes
ACE touchscreen question "What is his age now?"
The following checks were performed:
- If answer < Participants age + 10 years then rejected
- If answer > 122 then rejected
- If answer < Participants age + 14 years then participant asked to confirm
- If answer > 105 then participant asked to confirm
Field 2946 was collected from participants who indicated their father is still alive, as defined by their answers to Field 1797 or, if they are adopted, their adopted father is still alive, as defined by their answers to Field 1797
Coding 100291 defines 2 special values:
- -1 represents "Do not know"
- -3 represents "Prefer not to answer"
3 Related Data-Fields
| Field ID | Description | Relationship |
|---|
| 3912 | Adopted father still alive | Field 3912 affects who was asked to answer Current Field |
| 1797 | Father still alive | Field 1797 affects who was asked to answer Current Field |
| 1845 | Mother's age | Field 1845 is maternal counterpart of paternal Current Field |
