Outcome measures | Dosage regimen | ||
---|---|---|---|
 | 1.5 mg | 0.75 mg (12 hourly) | 0.75 mg (24 hourly) |
Pregnancy rate (%) | 0.64(a) – 1.28(b) | 0.57(b) – 2.0(c) | 1.9(c) |
Prevented fraction (%) | 92.99(a) – 94.7(b) | 75.0(c) – 95.2(b) | 72.0(c) |
Side effects (more prominent) | Headache, breast tenderness, heavy menses, fatigue, vomiting | Nausea, diarrhea, lower abdominal pain, delay of menses | Dizziness |