Table 1 Characteristics of the IVF cycles for patients co-treated with letrozole compared to the control group
|  | Letrozole group (n = 13) | Without letrozole (n = 13) | P value |
|---|---|---|---|
Age (years) | 36.3 ± 3.9 | 35.8 ± 3.7 | NS |
AMH (pmol/l) | 14.26 ± 7.7 | 16.4 ± 6.7 | NS |
FSH | 7.3 ± 1.6 | 6.6 ± 1.9 | NS |
Etiology for infertility | Unexplained-8 Male factor-3 Mechanical-0 Fertility preservation-2 | Unexplained-7 Male factor-3 Mechanical-1 Fertility preservation- 2 | NS |
Length of stimulation (days) | 9.4 ± 1.8 | 10.7 ± 1.7 | NS |
Dosage of gonadotropins | 3085 ± 633 | 3294 ± 917 | NS |
Oocytes (n) | 11.7 ± 5.7 | 12.1 ± 6.1 | NS |
2PN(n) | 6.6 ± 5.1 | 7.6 ± 4.4 | NS |
Blastocysts (n) | 3.1 ± 2.2 | 2.9 ± 1.9 | NS |
Blastocyst rate (blast/2PN) | 46.9% | 38.1% | NS |
E2 levels (pmol/l) | 1032 ± 375 | 8069 ± 3068 | 0.001 |
Ongoing Pregnancy rate | 5/11 (45.4%) | 4/11(36.3%) | NS |