Table 3: Allelic frequency in men with proven fathers ( 𝑛 = 2 4 0 ) and nonobstructive azoospermic ( 𝑛 = 1 5 0 ) and severe oligozoospermic ( 𝑛 = 1 2 0 ) ( 𝑃 > . 0 5 by 𝜒 2 test).

GroupProven fathers 𝑛 (%)Nonobstructive azoospermic 𝑛 (%)Severe oligozoospermic 𝑛 (%)

1A-Asn49 (10.2)30 (10.0)30 (12.5)
2A-Ser13 (2.7)7 (2.3)9 (3.8)
3G-Asn301 (62.7)197 (65.7)147 (61.2)
4G-Ser97 (20.2)50 (16.7)48 (20.0)
5*Undecided20 (4.2)16 (5.3)6 (2.5)

Group 5 consists of alleles 1, 2, 3, and 4, which cannot be distinguished and are included in the statistical analysis as ‘‘dummy’’ variables.