Table 3 Effects of paternal age on IVF

Mean maternal age (years ± SD)

29.39 ± 5.11

34.22 ± 4.18

37.08 ± 3.43

37.00 ± 5.77

<0.0001

Number of IVF

114

524

211

10

Mean number of inseminated oocytes ± SD

10.11 ± 5.72

9.99 ± 5.44

9.31 ± 5.26

7.30 ± 6.17

0.1024

Fertilization rate (%)

64.01

67.66

65.99

42.46

<0.0001

Mean number of embryos at day 2 ± SD

6.76 ± 4.29

7.01 ± 4.58

6.38 ± 4.12

3.40 ± 4.67

0.0104

Mean number of embryos at day 3 ± SD

6.13 ± 3.88

6.31 ± 4.17

5.72 ± 4.02

2.90 ± 4.15

0.0048

Mean number of embryos in prolonged culture ± SD

3.51 ± 3.68

4.09 ± 4.16

3.60 ± 3.86

1.60 ± 3.53

0.0408

Mean number of obtained blastocysts ± SD

1.74 ± 2.35

2.25 ± 2.73

1.78 ± 2.30

0.90 ± 2.02

0.0319

Rate of blastocyst formation (%)

49.50

54.97

49.41

56.25

0.0255

Mean number of transferred blastocysts ± SD

0.053 ± 0.224

0.113 ± 0.322

0.118 ± 0.324

0.000 ± 0.000

0,6987

Mean number of frozen blastocysts ± SD

0.667 ± 1.420

1.040 ± 1.830

1.070 ± 1.780

0.700 ± 1.640

0.3081

Rate of useful blastocysts (%)

41.41

51.10

66.93

77.78

<0.0001

Rate of clinical pregnancies (%)

28.60

38.90

39.70

14.30

0.1151

Rate of miscarriages (%)

17.90

18.60

34.40

NR

0.3504