Table 1.

Clinical parameters of study population.

	Controls	Chronic periodontal disease
	n = 44	n = 82
Age (years)
Mean ± SD (range)	39.0 ± 14.3	45.9 ± 10.3
Gender	(P = 0.0981)
Male	27%	39%
Female	73%	61%
Pocket probing (mm)	1.9 ± 1.3	7.9 ± 1.9