1,132,016 items of data are available, covering 386,094 participants.
Some values have special meanings defined by Data-Coding 37
Defined-instances run from 0 to 3, labelled using Instancing 2
Array indices run from 0 to 33.
Data has not been summarised because the contents are polymorphic.
For each disease entered, the nurse entered the date or age at diagnosis using a pop-up screen, depending on the participant's response. See Related Data-fields tab for further information on where to find separate data-fields for age and year of diagnosis.
Coding 37 defines 2 special values:
- -3 represents "Preferred not to answer"
- -1 represents "Time uncertain/unknown"