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Table 1 Baseline characteristics of patients

From: Letrozole supplementation during controlled ovarian stimulation in expected high responders: a pilot randomized controlled study

  Letrozole No letrozole Wilcoxon W/t/X2 P
N 65 65   
Age of women (year) 28 (21,35) 29 (23,36) −1.182 0.237
Body mass index (kg/m2) 21.76 ± 2.4 22.13 ± 2.45 − 0.878 0.382
Duration of infertility (year) 3 (1,10) 3 (1,12) −0.262 0.793
Number of embryo transfer 2 (0,2) 2 (0,2) −0.229 0.819
Infertility type    0.281 0.596
 Primary infertility 30 (46.15%) 27 (41.54%)   
 Secondary infertility 35 (53.85%) 38 (58.46%)   
Antrol follicle count 22 (14,23) 22 (12,30) −0.592 0.554
Mean baseline hormone values (Day3) FSH (UI/L) 5.36 (2.72,11.27) 5.51 (3.24,12.01) −0.17 0.865
Progesterone (nmol/L) 0.27 (0.1,0.95) 0.27 (0.1,1.07) −0.142 0.887