Data
646,197 items of data are available, covering 501,938 participants, encoded using Data-Coding
8.
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
501,938 participants, 501,938 items
Instance 1 : First repeat assessment visit (2012-13)
20,323 participants, 20,323 items
Instance 2 : Imaging visit (2014+)
102,489 participants, 102,489 items
Instance 3 : First repeat imaging visit (2019+)
21,447 participants, 21,447 items
Notes
Calendar month that participant attended a UK Biobank assessment centre.
Automatically acquired at Reception stage.