Table 3. Y haplogroup distributions of the NOA patients and the normal controls.

Y Haplogroup	sub-lineage	NOA	Normal	P value*
J		2(0.3%)	2(0.3%)	1
T		1(0.1%)	0	1
N		45(7.6%)	34(6.0%)	2.9 × 10−1
Q		28(4.8%)	16(2.8%)	9.2 × 10−2
C		63(10.7%)	47(8.3%)	1.6 × 10−1
D		10(1.7%)	14(2.5%)	4.1 × 10−1
R		2(0.3%)	5(0.9%)	2.8 × 10−1
G		0	1(0.2%)	4.9 × 10−1
O	O2*	0	9(1.6%)	1.6 × 10−3
	O3a	394(66.9%)	388(68.2%)	6.6 × 10−1
	O2a	41(7.0%)	42(7.4%)	8.2 × 10−1
	O2b	2(0.3%)	4(0.7%)	4.4 × 10−1
	O1a2	1(0.2%)	7(1.2%)	3.5 × 10−2
total		589	569

^*Fisher’s exact test, one sided.