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| Time after unprotected sex | Pregnancies per patient population | |||
|---|---|---|---|---|
| Ulipristal | Levonorgestrel | |||
| 0–24 hours | 5/584 (0.9%) | 15/600 (2.5%) | ||
| 0–72 hours | 22/1617 (1.4%) | 35/1625 (2.2%) | ||
| 0–120 hours | 22/1714 (1.3%) | 38/1731 (2.2%) | ||
Source: Reference 2
