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52,269 items of data are available, covering 52,269 participants. Some values have special meanings defined by Data-Coding 819.
There are 8791 distinct values.
Mean = 2006-05-08
236 items below graph minimum of 1976-10-12
1 items have value 1902-02-02 (Code has event date matching participant's date of birth)
17 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 J06. The code corresponds to "acute upper respiratory infections of multiple and unspecified sites". Note that events which were apparently before birth were omitted when constructing this data field.