Thromboembolic events in postmenopausal women receiving hormone replacement therapy (HRT) v no HRT*
| Study type | Number of studies | Relative risk (95% credible interval)† |
|---|---|---|
| *A random effects model was used. | ||
| †Credible interval is the range within which a 95% chance exists of finding the true relative risk. | ||
| Randomised controlled trial | 3 | 3.75 (1.2 to 10.3) |
| Cohort study | 1 | 2.10 (1.2 to 3.8) |
| Case control study | 8 | 2.05 (1.4 to 2.6) |
| All studies | 12 | 2.14 (1.6 to 2.8) |