Figure 4

Age (years) at amenorrhoea by history of hysterectomy among German cohort studies, 1997–2006. Relative frequency of women with amenorrhoea by 1-year age groups; mean age and standard deviation among women without a history of HE 49.7 years (5.2) and with a history of HE 43.5 years (7.0) with an estimated mean difference of 6.2 years (95% CI: 5.8-6.6). Contributing studies to this pooled analysis were HNR, CARLA, and SHIP-0.