Table 1.

Baseline cycle characteristics

	P4 < 20 ng/ml day 19	P4 > 20 ng/ml day 19	p value
Age	37 ± 4.2	37 ± 4.3	NS
Total gonadotropins (IU)	3400 ± 1375	3571 ± 1497	NS
Day 2 FSH (mIU/ml)	5.99 ± 2.74	5.87 ± 2.94	NS
Day 2 Estradiol (pg/ml)	38.3 ± 14.2	46.1 ± 34	NS
Estradiol at trigger (pg/ml)	2904 ± 1173	2656 ± 1131	NS
# Eggs	17.3 ± 8.1	16.2 ± 8.9	NS
# 2PN embryos	10.9 ± 5.4	10.9 ± 6.7	NS
# Biopsy embryos	5.9 ± 4.2	5.5 ± 4.6	NS
P4 at day 19 (ng/ml)	15.9 ± 2.5	30.5 ± 11	<0.001

T test of means