| Table 1. Number of IVF cycles | ||||
| Serum progesterone on the day of hCG | ||||
|---|---|---|---|---|
| Low | Normal | High | Total | |
| < 0.5 ng/ml | 0.5 to 1.5ng/ml | > 1.5 ng/ml | ||
| Number of cycles n (%) | 223 (10.38) | 1163 (54.12) | 763 (35.50) | 2149 (100) |
P4=Serum progesterone on the day of hCG trigger; a=Number (%)