8. Metformin vs laparoscopic ovarian drilling (LOD): ovulation rate per cycle.
| Metformin | LOD | ||||
| Study ID | Events | Cycles | Events | Cycles | P value |
| BMI < 30 kg/m2 | |||||
| Palomba 2004 | 115 | 210 | 123 | 231 | P = 0.75 |
| BMI ≥ 30 kg/m2 | |||||
| Hamed 2010 | 94 | 281 | 131 | 258 | P < 0.01 |
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