Data
296,804 items of data are available, covering 228,452 participants, encoded using Data-Coding 
100349.
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
228,434 participants, 228,434 items
 
Instance 1 : First repeat assessment visit (2012-13)
9,920 participants, 9,920 items
 
Instance 2 : Imaging visit (2014+)
48,202 participants, 48,202 items
 
Instance 3 : First repeat imaging visit (2019+)
10,248 participants, 10,248 items
 
Notes
ACE touchscreen question "Have you ever had a blood test for prostate cancer (prostate specific antigen or PSA test)?"
If the participant activated the Help button they were shown the message:
| If you are unsure, select Do not know. 
 |