Mean CMR parameters for each cohort are presented in Table 2. Before adjustment, women who had used MHT ≥ 3 years had significantly smaller LV end-diastolic volume (117±22 ml vs 124±22 ml; p<0.0001), LV end-systolic volume (46±12 ml vs 48±12 ml; p <0.005), LV stroke volume (71±14 ml vs 75±14 ml; p<0.0001) and LA maximal volume (57±17 ml vs 61±17 ml; p<0.0001) compared to the cohort who had never used MHT. There was no significant difference in LV mass between the two groups.