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 (%)