Association between IFN-γ +874A/T and IFN-γR1 (-611A/G, +189T/G, and +95C/T) Gene Polymorphisms and Chronic Periodontitis in a Sample of Iranian Population

Table 4

Demographic data in patients with chronic periodontitis (CP) and controls.

	Patients with CP	Controls
Age
Mean age	28.33 ± 5.765	29.22 ± 3.597
Age range	16–42	24–37
Gender
Female	95 (45.2%)	52 (52%)
Male	115 (54.8%)	48 (48%)
Race
Sistani	82 (39%)	42 (42%)
Baluch	71 (33.8%)	24 (24%)
Other	57 (27.1%)	34 (34%)
Clinical parameters
BOP index (%)	85.86 ± 3.68	—
Mean PD (mm)	5.58 ± 0.63	1.50 ± 0.86
CAL (mm)	5.44 ± 0.58	—

“—” means bleeding and attachment loss were not seen in controls.
Data are (%) or mean ± SD.