Data
637,626 items of data are available, covering 497,772 participants.
Defined-instances run from 0 to 3, labelled using Instancing 
2.
| 
| Maximum | 2025-08-30 |  | Decile 9 | 2022-04-24 |  | Decile 8 | 2013-03-16 |  | Decile 7 | 2010-04-07 |  | Decile 6 | 2009-10-28 |  | Median | 2009-06-18 |  | Decile 4 | 2009-02-13 |  | Decile 3 | 2008-10-03 |  | Decile 2 | 2008-06-03 |  | Decile 1 | 2008-02-06 |  | Minimum | 2007-04-16 |  |   |  | 
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
496,484 participants, 496,484 items
| 
| Maximum | 2010-10-01 |  | Decile 9 | 2010-04-08 |  | Decile 8 | 2009-11-24 |  | Decile 7 | 2009-08-14 |  | Decile 6 | 2009-05-03 |  | Median | 2009-01-30 |  | Decile 4 | 2008-10-16 |  | Decile 3 | 2008-07-17 |  | Decile 2 | 2008-04-14 |  | Decile 1 | 2008-01-07 |  | Minimum | 2007-04-16 |  |   |  | 
Instance 1 : First repeat assessment visit (2012-13)
20,312 participants, 20,312 items
| 
| Maximum | 2013-06-08 |  | Decile 9 | 2013-05-15 |  | Decile 8 | 2013-04-22 |  | Decile 7 | 2013-03-24 |  | Decile 6 | 2013-02-25 |  | Median | 2013-01-28 |  | Decile 4 | 2012-12-16 |  | Decile 3 | 2012-11-16 |  | Decile 2 | 2012-10-18 |  | Decile 1 | 2012-09-18 |  | Minimum | 2012-08-01 |  |   |  | 
Instance 2 : Imaging visit (2014+)
100,004 participants, 100,004 items
| 
| Maximum | 2025-08-30 |  | Decile 9 | 2024-10-21 |  | Decile 8 | 2024-01-29 |  | Decile 7 | 2023-07-12 |  | Decile 6 | 2022-12-07 |  | Median | 2022-02-13 |  | Decile 4 | 2019-07-10 |  | Decile 3 | 2018-10-30 |  | Decile 2 | 2017-12-04 |  | Decile 1 | 2016-07-14 |  | Minimum | 2014-04-30 |  |   |  | 
Instance 3 : First repeat imaging visit (2019+)
20,826 participants, 20,826 items
| 
| Maximum | 2025-08-30 |  | Decile 9 | 2025-06-01 |  | Decile 8 | 2025-03-08 |  | Decile 7 | 2024-11-30 |  | Decile 6 | 2024-09-11 |  | Median | 2024-06-21 |  | Decile 4 | 2024-03-09 |  | Decile 3 | 2023-07-12 |  | Decile 2 | 2021-06-16 |  | Decile 1 | 2019-12-02 |  | Minimum | 2019-05-22 |  |   |  |