Table 1. Patient and cycle characteristics for the three treatment groups
Characteristic	Group 1 (E2 gel)	Group 2 (E2 oral)	Group 3 (E2 patch)	p-value
n	32	33	39
Age (y)	33.81±3.34	35.0±4.81	34.61±4.49	0.50
BMI (Kg/m2)	24.28±2.62	25.83±5.80	24.02±3.10	0.14
Day 3 FSH(mUI/mL)	10.37±6.80	12.51±7.63	12.71±8.41	0.38
AFC	13.53±4.64	12.06±4.58	13.12±4.57	0.41
Day 3 AMH (ng/mL)	3.50±3.66	2.82±2.59	2.75± 2.68	0.52
Length of stimulation (d)	10.00±1.66	9.75±1.52	10.61±1.51	0.06
Gonadotropin dose (IU)	1929.68±777.51	2041.51±691.47	2193.59±757.80	0.32
Peak E2 level hCG day administration (pg/ml)	2785.62±873.97	2315.00±984.49	2555.64±907.50	0.12
Peak P level hCG day administration (ng/ml)	0.39±0.26	0.42±0.27	0.52±0.27	0.09
Note: p<0.05 was considered to be statistically significant. Data are expressed as mean values ± SD