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Table 2 Embryological results according to age

From: Minimal ovarian stimulation combined with elective single embryo transfer policy: age-specific results of a large, single-centre, Japanese cohort

  Age (years)
  ≤29 30-34 35-39 40-44 ≥45 Total pa
Fertilization rate
   IVF, % 76.6 73.6 76.1 79.9 77.7 77 0.07
   ICSI, % 85.4 83.7 83.1 83.1 83 83.2 0.75
Cleavage rate
   IVF, % 92.4 89.2 87.5 88.5 87.7 88.3 0.7
   ICSI, % 93.9 95 94.7 92.7 90.2 93.4 0.24
   IVF, % 70.5 67 64.4 49.7 25.9 57.3 <0.0001
   ICSI, % 69.8 59.5 56 40.1 21.7 46.6 <0.0001
  1. a Cochran-Armitage test for trend.