Table 2. Analysis of association between the polymorphisms and risk of CIN.

Genotypes*	Control(%),total = 800	CIN 1(%),total = 70	adjusted OR**(95% CI)	P	CIN 2/3(%),total = 410	adjusted OR**(95% CI)	P
TT	257(32.1)	22(31.4)	1		126(30.7)	1
TC	475(59.4)	42(60.0)	1.03(0.60–1.77)	0.906	249(60.7)	1.07(0.82–1.39)	0.617
CC	68(8.5)	6(8.6)	1.03(0.40–2.64)	0.950	35(8.5)	1.05(0.66–1.66)	0.836
TC or CC	543(67.9)	48(68.6)	1.03(0.61–1.75)	0.905	284(69.2)	1.07(0.83–1.38)	0.622

^*CC: PARP-1 Ala762Ala(GCG/GCG); TC: Val762Ala(GTG/GCG); TT: Val762Val(GTG/GTG).

^**all P-values adjusted for age.