Table 2.

Odds ratio for COM in regard to IL-1RA VNTR genotypes grouped by allel 2 status

IL-1RA VNTR	COM	Control	Unadjusted OR (95% CI)	P-value	Adjusted OR (95% CI)a)	P-value
Allele 2–	140 (74.1)	68 (57.1)	-	-	-	-
Allele 2+	49 (25.9)	51 (42.9)	0.48 (0.29–0.78)	0.003	0.47 (0.29–0.76)	0.004

Values are presented as number (%) unless otherwise indicated.

COM, chronic otitis media; IL-1RA, interleukin-1 receptor antagonist; VNTR, variable number tandem repeat; OR, odds ratio; CI, confidence interval; IL-1β, interleukin-1 beta.

^a)Adjusted for sex, age and IL-1β TaqI polymorphism.