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5,499 items of data are available, covering 5,499 participants. Some values have special meanings defined by Data-Coding 819.
There are 3744 distinct values.
Mean = 2004-02-22
83 items below graph minimum of 1972-04-15
1 items have value 1902-02-02 (Code has event date matching participant's date of birth)
6 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 26 Nov 2022.
Date of the first occurrence of any code mapped to 3-character ICD10 J20. The code corresponds to "acute bronchitis". Note that events which were apparently before birth were omitted when constructing this data field.