Table 2. The distribution of PARP-1 haplotypes.

PARP-1 haplotypes (SNPs)			Frequency			x2	P-value
rs2793378	rs7527192	rs1136410	Total	Cases	Controls
T	G	C	0.488	0.521	0.406	2.899	0.0887
T	A	T	0.128	0.132	0.115	0.145	0.7036
C	G	T	0.116	0.121	0.102	0.182	0.6694
T	A	C	0.096	0.091	0.106	0.142	0.7068
C	G	C	0.085	0.061	0.146	5.01	0.0252
T	G	T	0.078	0.065	1.109	1.465	0.2262

Abbreviation: SNP, single-nucleotide polymorphism.

P value after Bonferroni correction; P=8.3×10⁻³ (calculated as 0.05/6).