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313 items of data are available, covering 313 participants. Some values have special meanings defined by Data-Coding 819.
There are 301 distinct values.
Mean = 2005-06-13
1 item below graph minimum of 1948-11-12
1 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)
Date of the first occurrence of any code mapped to 3-character ICD10 H70. The code corresponds to "mastoiditis and related conditions". Note that events which were apparently before birth were omitted when constructing this data field.