Table 1.

Effect of macro haplogroup M and N on breast cancer occurrence

Sample	Value	Haplogroups		P value	OR (95%CI)	10398		P value	OR (95%CI)
		M(n)	N(n)			G	A
Cases	104	69	35	0.040*	1.77(1.03-3.07)	76	28	0.050*	1.77(1.00-3.14)
Controls	114	60	54			69	45

P values were estimated by "chi-square test"; (*) indicated statistical significant (P < 0.05). OR indicates odds ratio; 95% CI, 95%confidence interval.