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15,635 items of data are available, covering 15,635 participants. Some values have special meanings defined by Data-Coding 819.
There are 5769 distinct values.
Mean = 2009-03-23
102 items below graph minimum of 1984-04-13
3 items have value 1902-02-02 (Code has event date matching participant's date of birth)
8 items have value 1903-03-03 (Code has event date after participant's date of birth and falls in the same calendar year as date of birth)
Counts of participants/items last updated 23 Oct 2021.
Date of the first occurrence of any code mapped to 3-character ICD10 H04. The code corresponds to "disorders of lachrymal system". Note that events which were apparently before birth were omitted when constructing this data field.