Table 3 compares the preoperative factors associated with successful sperm retrieval among the participants

Age in years

33.1 ± 6

33(22–48)

31.2 ± 6.6

30.5(20–50)

0.136

Testis volume right (ml)

1.95 ± 0.77

1.95(0.7–3.2)

2.54 ± 0.8

2.84(0.7–4.2)

0.007

Testis volume left (ml)

1.97 ± 0.85

1.98(0.66–3.7)

2.59 ± 0.82

2.84(0.92–4.4)

0.007

Total testicular volume (ml)

3.92 ± 1.59

3.81(1.41–6.50)

5.13 ± 1.60

5.69(1.62–8.60)

0.005

TT (nmol/l)

2.8 ± 1.7

2.36(0.14–8.22)

3.83 ± 2.51

3.25(0.98–12)

0.086

FSH (IU/l)

33.57 ± 15.47

32.7(9–75)

35.75 ± 13.36

34.5(11–76)

0.515

LH (IU/l)

17.52 ± 5.79

16.5(2.8–28.5)

21.29 ± 7.15

19.5(13–47)

0.044

Prolactin (ngm/dL)

11.4 ± 4.83

9.95(5.7–29.4)

11.84 ± 5.6

11.87(5–29.2)

0.827

Estradiol (ngm/dL)

26.5 ± 7.6

26.8(9–38)

31 ± 12.8

28(17–62.6)

0.310

FISH test

46xy

17.9 ± 16.5%

10 (0–60)%

26.4 ± 15.3%

25(0–54)%

0.014

47xxy

81.8 ± 16.3%

90 (40–100)%

73.2 ± 15.5%

75(46–100)%

0.015