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Table 2 Characteristics of the fresh cycles in the two study groups

From: Risk of miscarriage in women with endometriosis undergoing IVF fresh cycles: a retrospective cohort study

Characteristics Endometriosis with Endometrioma n = 358 Endometriosis without Endometrioma n = 648 OR (95% CI) P value
Duration of stimulation (days) 12.14 ± 2.37 11.49 ± 2.59 < 0.001
Total dose of FSH administered (IU) 3706.35 ± 1472.86 3336.09 ± 1418.81 < 0.001
Estradiol at the time of hCG administration (pg/ml) 2240.06 ± 1459.17 2252.25 ± 1680.12 0.91
Total oocytes retrieved 9.78 ± 5.21 10.23 ± 5.87 0.22
In vitro fertilization technique used
 IVF 254 (70.9) 466 (71.9) 0.954 (0.717–1.269) 0.75
 ICSI 104 (29.1) 182 (28.1)  
Number of embryos-blastocysts transferred
 1 37 (10.3) 79 (12.2) 0.830 (0.549–1.256) 0.38
  ≥ 2 321 (89.7) 569 (87.8)   
Stage at embryo transfer
 72 h 344 (96.1) 633 (97.7) 0.582 (0.278–1.220) 0.15
 Blastocysts 14 (3.9) 15 (2.3)   
 Miscarriage 71 (19.8) 154 (23.8) 0.794 (0.578–1.089) 0.15