Determining the Optimal Duration of Progesterone Supplementation prior to Transfer of Cryopreserved Embryos and Its Impact on Implantation and Pregnancy Rates: A Pilot Study

Table 1

Comparison of characteristics of the patients receiving progesterone for 3 and 4 days before embryo transfer.

Variables	Group I (3 days of P) ()	Group II (4 days of P) ()	value
Age (yrs)	30.24 + 4.7	29.86 + 4.4	NS
Days of estrogen exposure	12.3	13.2	NS
Endometrial thickness (mm)	8.42 + 1.41	8.64 + 1.22	NS
Number of embryos transferred	2.72 + 0.73	2.77 + 0.74	NS