Table 6.
Effects of paternal age in ICSI
| Paternal age (years) | 2 0 < Age < 29 | 30 < Age < 39 | 40 < Age < 50 | Age > 51 | P value |
|---|---|---|---|---|---|
| Mean maternal age (years ± SD) | 27.54 ± 4.55 | 32.69 ± 4.12 | 36.72 ± 3.95 | 36.53 ± 4.90 | <0.0001 |
| Number of ICSI | 226 | 949 | 410 | 47 | |
| Mean number of injected oocytes ± SD | 8.69 ± 4.27 | 7.89 ± 4.53 | 7.15 ± 4.36 | 7.32 ± 3.82 | <0.0001 |
| Fertilization rate (%) | 61.05 | 65.20 | 64.57 | 70.35 | 0.0007 |
| Mean number of embryos at day 2 ± SD | 5.11 ± 3.58 | 4.92 ± 3.60 | 4.46 ± 3.45 | 4.74 ± 3.09 | 0.0400 |
| Mean number of embryos at day 3 ± SD | 4.24 ± 3.28 | 4.27 ± 3.48 | 3.88 ± 3.18 | 4.32 ± 3.30 | 0.3273 |
| Mean number of embryos in prolonged culture ± SD | 2.89 ± 3.51 | 2.73 ± 3.29 | 2.35 ± 3.20 | 2.45 ± 2.86 | 0.0821 |
| Mean number of obtained blastocysts ± SD | 1.46 ± 2.39 | 1.31 ± 2.00 | 1.10 ± 1.91 | 1.13 ± 1.94 | 0.1376 |
| Rate of blastocyst formation (%) | 50.38 | 48.11 | 46.99 | 46.09 | 0.5682 |
| Mean number of transferred blastocysts ± SD | 0.044 ± 0.227 | 0.077 ± 0.282 | 0.076 ± 0.274 | 0.064 ± 0.247 | 0.8895 |
| Mean number of frozen blastocysts ± SD | 0.619 ± 1.300 | 0.544 ± 1.170 | 0.410 ± 1.250 | 0.617 ± 1.410 | 0.0069 |
| Rate of useful blastocysts (%) | 45.59 | 47.27 | 43.93 | 60.38 | 0.1271 |
| Rate of clinical pregnancies (%) | 41.50 | 41.00 | 32.10 | 28.20 | 0.0162 |
| Rate of miscarriages (%) | 17.40 | 14.60 | 20.70 | 45.50 | 0.3510 |
SD standard deviation