Table 1. Chi-square test of independence of age groups with % Normal-Abnormal DFI in normozoospermic patients.
Age %DFI p-value
Normal Abnormal
<30
n=159
145
(91%)
14
(9%)
0.000***
31-40
n=561
482
(86%)
79
(14%)
41-50
n= 288
229
(80%)
59
(20%)
>50
n=75
53
(71%)
22
(29%)