Data
23,909 items of data are available, covering 22,054 participants, encoded using Data-Coding
100515.
Defined-instances run from 0 to 3, labelled using Instancing
2.
4 Instances
Instance 0 : Initial assessment visit (2006-2010) at which participants were recruited and consent given
6,369 participants, 6,369 items
Instance 1 : First repeat assessment visit (2012-13)
1,742 participants, 1,742 items
Instance 2 : Imaging visit (2014+)
14,330 participants, 14,330 items
Instance 3 : First repeat imaging visit (2019+)
1,468 participants, 1,468 items
Notes
ACE touchscreen question "Which eye(s) are affected by a cataract?"
Field 5441 was collected from participants who indicated they have cataract, as defined by their answers to Field 6148