Table 5. Distribution frequency of CA9 haplotypes in controls and oral-cancer patients.

Variable			Controls (N = 1038) n (%)	Patients (N = 924) n (%)	OR (95% CI)	p value
rs2071676A/G	rs3829078A/G	rs1048638C/A
A	A	C	484 (46.6%)	413 (44.7%)	Reference
G	A	C	451 (43.4%)	404 (43.8%)	1.050 (0.870–1.267)	0.612
A	A	A	66 (6.4%)	53 (5.7%)	0.941 (0.641–1.382)	0.757
G	G	C	35 (3.4%)	41 (4.4%)	1.373 (0.858–2.196)	0.858
G	A	A	2 (0.2%)	9 (1.0%)	5.274 (1.133–24.545)	0.018*
A	G	C	0 (0%)	4 (0.4%)	–	–

OR, odds ratio; CI, confidence interval.