IL18 Polymorphism and Periodontitis Susceptibility, Regardless of IL12B, MMP9, and Smoking Habits

Table 1

Characteristics of patients with CP and controls.

	CP patients	Controls
				OR (95% CI)
	(%)	(%)
Gender
Female	96 (50)	116 (61)
Male	96 (50)	73 (39)
Age
(year)
Smoking
Smokers+ex-smokers	82 (43)	47 (25)
Nonsmokers	110 (57)	142 (75)	0.0002	2.25 (1.45-3.49)
Nonsmokers
Gender
Female	57 (52)	98 (69)
Male	53 (48)	44 (31)
Age
(year)

: number; sd: standard deviation; OR: odds ratio; : value—only significant values are shown; CP: chronic periodontitis.