Skip to main content

Advertisement

Table 4 Effects of sperm concentration in ICSI

From: Sperm quality and paternal age: effect on blastocyst formation and pregnancy rates

Sperm concentration (M/ml) Conc < 0.2 0.2 < Conc < 5 5 < Conc < 15 Conc > 15 P value
Mean maternal age (years ± SD) 32.97 ± 5.05 31.98 ± 5.11 32.81 ± 5.05 33.94 ± 4.83 0.6257
Number of ICSI 282 373 326 651  
Mean number of injected oocytes ± SD 8.04 ± 4.52 8.50 ± 4.80 7.81 ± 4.29 7.28 ± 4.24 0.0007
Fertilization rate (%) 58.29 61.87 65.30 68.95 <0.0001
Mean number of embryos at day 2 ± SD 4.40 ± 3.30 5.04 ± 3.70 4.97 ± 3.56 4.81 ± 3.55 0.1515
Mean number of embryos at day 3 ± SD 4.03 ± 3.39 4.21 ± 3.51 4.25 ± 3.30 4.17 ± 3.33 0.7636
Mean number of embryos in prolonged culture ± SD 2.15 ± 2.93 2.78 ± 3.50 2.77 ± 3.43 2.73 ± 3.23 0.0562
Mean number of obtained blastocysts ± SD 0.84 ± 1.63 1.32 ± 2.15 1.44 ± 2.10 1.36 ± 2.07 0.0014
Rate of blastocyst formation (%) 39.17 47.49 51.88 49.69 <0.0001
Mean number of transferred blastocysts ± SD 0.035 ± 0.185 0.042 ± 0.228 0.092 ± 0.300 0.093 ± 0.307 0.3593
Mean number of frozen blastocysts ± SD 0.344 ± 0.980 0.592 ± 1.230 0.610 ± 1.400 0.516 ± 1.210 0.1113
Rate of useful blastocysts (%) 45.155 48.07 48.93 44.96 0.4562
Rate of clinical pregnancies (%) 35.30 41.30 39.60 37.60 0.4980
Rate of miscarriages (%) 22.70 9.60 14.90 21.00 0.1572
  1. Conc concentration, M/ml million per ml, SD, standard deviation