Since the age of 18, have you ever experienced a time interval of 3 or more Mo when you did not have a menstrual period:Find:Pt:^Patient:Ord:PhenX
since the age of 18, have you ever experienced a time interval of 3 or more mo when you did not have a menstrual period:find:pt:^patient:ord:phenx
Since the age of 18, have you ever experienced a time interval of 3 or more Mo when you did not have a menstrual period:Finding:To identify measures at a point in time:^Patient:Ordinal:PhenX
since the age of 18, have you ever experienced a time interval of 3 or more mo when you did not have a menstrual period:finding:to identify measures at a point in time:^patient:ordinal:phenx