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Table 1 Clinical characteristics of patients and of their controlled ovarian stimulation (COS) cycle according to fertilization of the oocyte retrieved from the largest follicle

From: Oocyte polarized light microscopy, assay of specific follicular fluid metabolites, and gene expression in cumulus cells as different approaches to predict fertilization efficiency after ICSI

  F group
(n = 29)
nF group
(n = 17)
p
Age (years) 36.9 ± 4.7 36.9 ± 4.2 ns
BMI (kg/m2) 23.8 ± 3.4 23.1 ± 3.0 ns
Basal (day 3) FSH (UI/I) 6.5 ± 2.2 8.6 ± 2.8 ns
AMH (ng/ml) 2.8 ± 1.1 3.1 ± 1.9 ns
AFC 16.3 ± 7.1 13.1 ± 5.7 ns
Length of COS (days) 10.5 ± 1.7 11.2 ± 1.9 ns
Total exogenous FSH (IU) 2281 ± 1188 2544 ± 1121 ns
Peak E2 (pg/ml) 1867 ± 905 1405 ± 759 ns
Retrieved oocytes 10.7 ± 4.6 5.9 ± 2.9 p < 0.001
OSI 6.5 ± 4.7 3.2 ± 3.0 p < 0.01
Mature (MII) oocytes (%) 80.2 ± 13.6 84.9 ± 16.9 ns
Fertilized (2PN) oocytes (%) 76.2 ± 16.8 45.3 ± 26.8 p < 0.001
Capacitated sperm (mln/ml) 0.78 ± 0.46 0.67 ± 0.31 ns
  1. F group = patients whose oocyte was fertilized, nF group = patients whose oocyte was not. BMI = body mass index; AFC = antral follicle count; OPU = ovum pick-up; OSI = ovarian sensitivity index = number of retrieved COCs × 1000/total FSH dose; MII = metaphase II. Values are expressed as mean ± standard deviation