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9,301 items of data are available, covering 9,301 participants. Some values have special meanings defined by Data-Coding 819.
There are 4147 distinct values.
Mean = 1989-10-13
19 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 08 Feb 2020.
Date of the first occurrence of any code mapped to 3-character ICD10 J40. The code corresponds to "bronchitis, not specified as acute or chronic". Note that events which were apparently before birth were omitted when constructing this data field.