Data
466,898 items of data are available, covering 392,276 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 | 120 |
| Decile 9 | 86 |
| Decile 8 | 82 |
| Decile 7 | 79 |
| Decile 6 | 76 |
| Median | 73 |
| Decile 4 | 69 |
| Decile 3 | 65 |
| Decile 2 | 61 |
| Decile 1 | 54 |
| Minimum | 10 |
|
|
- There are 108 distinct values.
- Mean = 71.1313
- Std.dev = 13.111
- 1 item above graph maximum of 118
- 492 items have value -3 (Prefer not to answer)
- 12224 items have value -1 (Do not know)
|
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
377,977 participants, 377,977 items
| Maximum | 120 |
| Decile 9 | 86 |
| Decile 8 | 82 |
| Decile 7 | 78 |
| Decile 6 | 75 |
| Median | 72 |
| Decile 4 | 69 |
| Decile 3 | 65 |
| Decile 2 | 60 |
| Decile 1 | 53 |
| Minimum | 10 |
|
|
- There are 106 distinct values.
- Mean = 70.5575
- Std.dev = 13.0168
- 1 item above graph maximum of 119
- 443 items have value -3 (Prefer not to answer)
- 10578 items have value -1 (Do not know)
|
Instance 1 : First repeat assessment visit (2012-13)
16,961 participants, 16,961 items
| Maximum | 118 |
| Decile 9 | 88 |
| Decile 8 | 84 |
| Decile 7 | 80 |
| Decile 6 | 77 |
| Median | 74 |
| Decile 4 | 70 |
| Decile 3 | 67 |
| Decile 2 | 62 |
| Decile 1 | 55 |
| Minimum | 18 |
|
|
- There are 88 distinct values.
- Mean = 72.2463
- Std.dev = 13.0012
- 4 items have value -3 (Prefer not to answer)
- 334 items have value -1 (Do not know)
|
Instance 2 : Imaging visit (2014+)
65,880 participants, 65,880 items
| Maximum | 116 |
| Decile 9 | 89 |
| Decile 8 | 85 |
| Decile 7 | 82 |
| Decile 6 | 79 |
| Median | 75 |
| Decile 4 | 72 |
| Decile 3 | 68 |
| Decile 2 | 63 |
| Decile 1 | 56 |
| Minimum | 10 |
|
|
- There are 98 distinct values.
- Mean = 73.8224
- Std.dev = 13.2818
- 43 items have value -3 (Prefer not to answer)
- 1211 items have value -1 (Do not know)
|
Instance 3 : First repeat imaging visit (2019+)
6,080 participants, 6,080 items
| Maximum | 107 |
| Decile 9 | 89 |
| Decile 8 | 85 |
| Decile 7 | 82 |
| Decile 6 | 79 |
| Median | 76 |
| Decile 4 | 72 |
| Decile 3 | 69 |
| Decile 2 | 64 |
| Decile 1 | 56 |
| Minimum | 15 |
|
|
- There are 84 distinct values.
- Mean = 74.1598
- Std.dev = 13.0804
- 2 items have value -3 (Prefer not to answer)
- 101 items have value -1 (Do not know)
|
Notes
ACE touchscreen question "What was his age when he died?"
The following checks were performed:
- If answer < 10 then rejected
- If answer > 122 then rejected
- If answer < 15 then participant asked to confirm
- If answer > 105 then participant asked to confirm
Field 1807 was collected from participants who indicated their father has died, as defined by their answers to Field 1797 or, if they are adopted, their adopted father has died, 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 |
| 3526 | Mother's age at death | Field 3526 is maternal counterpart of paternal Current Field |
