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"Variable Name","Variable ID","Variable Description",Version,"dbGaP Mapping" PX101101_Menstrual_Cycle_Pattern_Age_18_22,PX101101040000,"During ages 18-22 what was the pattern of your menstrual cycles? (excluding time around pregnancies)",,https://www.phenxtoolkit.org/protocols/view/101101 PX101101_Menstrual_Cycle_Typical_Days_Average,PX101101050000,"On average, during the last year, how many days 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?",,https://www.phenxtoolkit.org/protocols/view/101101 PX101101_Menstrual_Period_Stop_Age,PX101101070000,"How old were you when your periods stopped?",,https://www.phenxtoolkit.org/protocols/view/101101 PX101101_Menstrual_Period_Stop_Permanently,PX101101060000,"Have your menstrual periods stopped permanently?",,https://www.phenxtoolkit.org/protocols/view/101101 PX101101_No_Menstrual_Period_3_More_Months,PX101101010000,"Since the age of 18, have you ever experienced a time interval of 3 or more months when you did not have a menstrual period?",,https://www.phenxtoolkit.org/protocols/view/101101 PX101101_No_Menstrual_Period_Breastfeeding,PX101101020000,"Were you breastfeeding at the time?",,https://www.phenxtoolkit.org/protocols/view/101101 PX101101_No_Menstrual_Period_Breastfeeding_Pregnant_Always,PX101101030000,"Were you breastfeeding or pregnant every time this happened?",,https://www.phenxtoolkit.org/protocols/view/101101