Figure 1: Risk of venous thromboembolism estimated by adjusted Odds ratio and 95% confidence interval in postmenopausal women by hormonal therapy regimen modality and route of administration (Modified from reference [39]). OR: Odds ratio; CI: confidence interval; Oral E2: oral estradiol; Td E2: transdermal estradiol; Mic-P4: micronized progesterone; 17-OH P4: 17-OH progesterone derivatives; NorP4: nor-progesterone derivatives.