SNP

Genotypes

N (%)

Average age, x ± mx

DNA fragmentation level, %

Number of patients with DNA fragmentation level > 20%

G919A

GG

29 (56.9)

30.2 ± 2.5

11.7 ± 5.7

3 (10.3^*)

GA

16 (31.2)

30.6 ± 1.8

26.2 ± 8.8

11 (68.8^*)

AA

6 (11.9)

31.8 ± 2.6

36.5 ± 16.2

5 (83.3)

A2039G

AA

33 (64.7)

30.1 ± 2.3

13.9 ± 6.9

5 (15.2^**)

AG

13 (25.5)

31.3 ± 2.2

25.6 ± 8.4

10 (76.9^**)

GG

5 (9.8)

31.4 ± 2.7

39.3 ± 17.2

4 (80)

Statistics

^*df = 2, = 13.82, = 16.41, P < 0.001

^**df = 2, = 13.82, = 16.19, P < 0.001