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Table 1 Characteristics of the IVF cycles for patients co-treated with letrozole compared to the control group

From: The VEGF and PEDF levels in the follicular fluid of patients co- treated with LETROZOLE and gonadotropins during the stimulation cycle

  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