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| Outcome | # patients (#trials) | Event rate (placebo) | Event rate (treated) | Relative risk | Absolute risk dif | NNH |
| Adverse Events (mild/moderate): Acne | 657 (4) | 56/326 (17.2%) | 123/331 (37.2%) | 2.2 | 0.2 | 5 |
| 95% confidence interval | 1.65 to 2.83 | 0.13 to 0.26 | ||||
| Adverse Events (mild/moderate): Menstrual Change | 276 (3) | 5/137 (3.6%) | 6/139 (4.3%) | 1.2 | 0.1 | not statistically significant |
| 95% confidence interval | 0.38 to 3.77 | ‐0.04 to 0.05 | ||||
