From: Sperm quality and paternal age: effect on blastocyst formation and pregnancy rates
Sperm concentration (M/ml) | Conc < 15 | Conc > 15 | P value |
---|---|---|---|
Mean maternal age (years ± SD) | 33.60 ± 4.51 | 34.36 ± 4.76 | 0.2235 |
Number of IVF | 52 | 807 | |
Mean number of inseminated oocytes ± SD | 9.54 ± 5.30 | 9.83 ± 5.46 | 0.7268 |
Rate of fertilization (%) | 60.08 | 66.95 | 0.7381 |
Mean number of embryos at day 2 ± SD | 5.90 ± 4.56 | 6.84 ± 4.44 | 0.0702 |
Mean number of embryos at day 3 ± SD | 5.42 ± 3.81 | 6.14 ± 4.13 | 0.1911 |
Mean number of embryos in prolonged culture ± SD | 3.69 ± 4.20 | 3.87 ± 4.02 | 0.5102 |
Mean number of obtained blastocysts ± SD | 1.94 ± 2.55 | 2.06 ± 2.59 | 0.6040 |
Rate of blastocyst formation (%) | 52.6 | 53.07 | 0.9107 |
Mean number of transferred blastocysts ± SD | 0.115 ± 0.323 | 0.104 ± 0.310 | 0.8808 |
Mean number of frozen blastocysts ± SD | 1.02 ± 1.58 | 0.990 ± 1.780 | 0.7155 |
Rate of useful blastocysts (%) | 58.42 | 53.22 | 0.0181 |
Rate of clinical pregnancy (%) | 28.89 | 37.96 | 0.228 |
Rate of miscarriage (%) | 30.77 | 21.80 | 0.3832 |