Table 3. Distribution of genotypes and odds ratios (OR) for different histological subtypes of thyroid carcinoma and controls.

Genotypes PARP1	Controls (n = 400)		Papillary carcinoma	*P- value		Follicular	*P- value		Medullary	*P- value		Anaplastic	*P- value
		n	(n = 351)		n	carcinoma		n	carcinoma		n	(n = 7)
			OR (95% CI)			(n = 82)			(n = 16)			OR (95% CI)
						OR (95% CI)			OR (95% CI)
rs1136410
TT	93	64	1.00(Ref)		15	1.00(Ref)		3	1.00(Ref)		4	1.00(Ref)
TC	91	76	0.93(0.66–1.32)	0.71	17	0.88(0.49–1.59)	0.68	4	1.13(0.35–3.59)	0.83	1	0.56(0.06–4.76)	0.60
CC	216	217	1.37(1.03- 1.84)	0.02	48	1.20(0.74–1.94)	0.45	9	1.09(0.40–2.99)	0.85	2	0.340.06–1.77)	0.207
rs1805414
TT	29	57	1.00(Ref)		13	1.00(Ref)		3	1.00(Ref)		1	1.00(Ref)
TC	291	209	0.55(0.40–0.74)	0.0001	47	0.50(0.30–0.82)	0.006	9	0.48(0.17–1.32)	0.15	4	0.49 (0.11–2.26)	0.36
CC	80	91	1.40(0.99–1.97)	0.05	20	1.29(0.73–2.25)	0.37	4	1.33(0.41–4.24)	0.62	2	1.60(0.30–8.39)	0.57
rs1805404
CC	254	249	1.00(Ref)		55	1.00(Ref)		11	1.00(Ref)		2	1.00(Ref)
CT	98	86	1.00(0.71–1.39)	0.99	18	0.86(0.48–1.53)	0.62	4	1.02(0.32–3.25)	0.96	1	0.51(0.06–4.31)	0.53
TT	48	22	0.49(0.28–0.83)	0.008	7	0.68(0.29–1.57)	0.37	01	0.48(0.06–3.78)	0.49	4	9.77(2.12–45.0)	0.003

OR, odds ratio; CI, confidence interval; OR, CI and *p-value calculated by regression analysis.