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On average, during the last year, how many day were there in a typical menstrual cycle, that is, from the beginning of bleeding of one menstrual period to the beginning of bleeding of the next period [PhenX]

On average, during the last Y, how many D were there in a typical menstrual cycle, that is, from the beginning of bleeding of one menstrual period to the beginning of bleeding of the next period measured as a number rate in the patient by PhenX, an ordinal result. PhenX measures.