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The 2001 Stages of Reproductive Aging Workshop (STRAW) system standardized the classification of menopause status for studies of midlife women. A decade later, STRAW + 10 reflects new data on the menopausal transition published since 2001.
STRAW + 10 Staging Criteria
Late reproductive stage: Fecundability begins to decline; changes in menstrual cycles may occur.
Early menopausal transition: Characterized by increased variability in menstrual cycle length.
Late menopausal transition: Characterized by increased variability in menstrual cycles, including episodes of amenorrhea ≥60 days; follicle-stimulating hormone (FSH) levels may range between menopausal levels and levels associated with earlier reproductive years.
Early postmenopause: Five to 8 …