Long agonist protocol group N = 96

Short antagonist protocol group N = 89

P*

E2 on the beginning of COS

35.1 (18.6)

36.5 (18.0)

0.61

E2 level on day-5 of COS

324.9 (273.1)

363.3 (293)

0.36

E2 level at the day of hCG administration

2461.8 (2283.7)

2558.2 (2043)

0.76