| Table 1. Patient and cycle characteristics for the three treatment groups | ||||
| Characteristic | Group 1 (E2 gel) n=30 | Group 2 (E2 oral) n=30 | Group 3 (E2 patch) n=30 | p value |
| Age (y) | 35.61±2.34 | 35.5±3.81 | 34.81±3.49 | .70 |
| BMI (Kg/m2) | 23.48±2.12 | 24.23±4.80 | 24.32±2.10 | .17 |
| Day 3 FSH(mUI/mL | 11.35±5.40 | 12.00±6.73 | 15.71±6.41 | .42 |
| Length of preparation of only estrogen (d) | 15.00±0.66 | 14.75±1.92 | 15.61±1.91 | .13 |
| Peak E2 level on thawing day embryo(pg/ml) | 301.00±73.97 | 298.00±55.49 | 302.64±57.50 | .16 |
| Peak E2 level on beta day (pg/ml) | 398.62±63.97 | 385.00±74.49 | 379.64±67.50 | .12 |
| Peak P level on thawing day embryo(ng/ml) | 0.27±0.12 | 0.28±0.16 | 0.27±0.23 | .14 |
| Peak P level on beta day (ng/ml) | 0.35±0.22 | 0.38±0.26 | 0.40±0.23 | .09 |
Note: p< .05 was considered statistically significant. Data is expressed as mean ± SD