Fig. 4From: Is menopause still evolving? Evidence from a longitudinal study of multiethnic populations and its relevance to women’s healthAverage duration of perimenopause as a function of perimenopause age of onset by race/ethnicity. Duration was obtained from age of onset of perimenopause and menopause using data from SWAN Baseline to Visit 10. Data shown as a mean ± SEM of women in each ethnic groupBack to article page