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996,673 items of data are available, covering 398,734 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 31.
Data has not been summarised because the contents are polymorphic.
For each operation 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.