Data
10,214 items of data are available, covering 3,305 participants.
Defined-instances run from 24 to 34, labelled using Instancing
1.
Units of measurement are None.
Data has not been summarised because combining instances would be misleading.
5 Instances
Instance 24 : 1989 - Survey carried out at age 43 years.
2,790 participants, 2,790 items
| Maximum | 35 |
| Decile 9 | 32 |
| Decile 8 | 30 |
| Decile 7 | 28 |
| Decile 6 | 26 |
| Median | 25 |
| Decile 4 | 24 |
| Decile 3 | 22 |
| Decile 2 | 20 |
| Decile 1 | 18 |
| Minimum | 14 |
|
|
- There are 22 distinct values.
- Mean = 24.8835
- Std.dev = 5.23009
|
Instance 25 : 1999 - Survey carried out at age 53 years.
2,652 participants, 2,652 items
| Maximum | 34 |
| Decile 9 | 31 |
| Decile 8 | 29 |
| Decile 7 | 27 |
| Decile 6 | 26 |
| Median | 24 |
| Decile 4 | 23 |
| Decile 3 | 21 |
| Decile 2 | 19 |
| Decile 1 | 16 |
| Minimum | 13 |
|
|
- There are 22 distinct values.
- Mean = 23.9336
- Std.dev = 5.26107
|
Instance 26 : 2006-2010 - Survey carried out at age 60 to 64 years.
1,971 participants, 1,971 items
| Maximum | 34 |
| Decile 9 | 31 |
| Decile 8 | 29 |
| Decile 7 | 27 |
| Decile 6 | 26 |
| Median | 24 |
| Decile 4 | 23 |
| Decile 3 | 21 |
| Decile 2 | 19 |
| Decile 1 | 17 |
| Minimum | 14 |
|
|
- There are 21 distinct values.
- Mean = 24.1355
- Std.dev = 5.057
|
Instance 28 : 2015 - Survey carried out at age 69 years.
1,901 participants, 1,901 items
| Maximum | 32 |
| Decile 9 | 29 |
| Decile 8 | 27 |
| Decile 7 | 25 |
| Decile 6 | 24 |
| Median | 22 |
| Decile 4 | 21 |
| Decile 3 | 19 |
| Decile 2 | 17 |
| Decile 1 | 15 |
| Minimum | 12 |
|
|
- There are 21 distinct values.
- Mean = 22.1142
- Std.dev = 5.03508
|
Instance 34 : 2023 - Home visit at 77 years.
900 participants, 900 items
| Maximum | 28 |
| Decile 9 | 25 |
| Decile 8 | 23 |
| Decile 7 | 21 |
| Decile 6 | 20 |
| Median | 18 |
| Decile 4 | 17 |
| Decile 3 | 15 |
| Decile 2 | 14 |
| Decile 1 | 12 |
| Minimum | 9 |
|
|
- There are 20 distinct values.
- Mean = 18.2378
- Std.dev = 4.88684
|
Notes
wlt89 - Word list memory test, age 43: sum of 3 tests (max 45), wlt99 - Word list memory test, age 53: sum of 3 tests (max 45), wlt09 - Word list memory test, age 60-64: sum of 3 tests (max 45), wlt15x - Word list memory test, age 69: sum of 3 tests (max 45), wlt23x - Word list memory test, age 77: sum of 3 tests (max 45)
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