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12,428 items of data are available, covering 12,428 participants. Some values have special meanings defined by Data-Coding 819.
There are 6205 distinct values.
Mean = 1999-04-23
41 items below graph minimum of 1961-08-30
1 items have value 1902-02-02 (Code has event date matching participant's date of birth)
Date of the first occurrence of any code mapped to 3-character ICD10 N94. The code corresponds to "pain and other conditions associated with female genital organs and menstrual cycle". Note that events which were apparently before birth were omitted when constructing this data field.