Comparison of COH outcome in OCP and non-OCP groups. Detailed legend: Clinical and ongoing pregnancy rates after fresh embryo transfer were significantly higher in the non-OCP protocol (50% vs 28.2%, p = 0.032 and 41.7% vs 17.9%, p = 0.015, respectively). The implantation rate was higher in non-OCP group but the difference was not statistically significant (51% vs 34%). Similarly, the abortion rate was higher in OCP group protocol but not significantly (36.4% vs 17%). Cumulative clinical and ongoing pregnancy rates (including frozen embryo transfers) were not statistically different between the two groups (54.2% vs 41.0% and 54.2% vs 38.5%, respectively).