Table 4.

Extent and Severity of Periodontitis and GI according to Age

Variables		Age group (years)
		< 20	20-29	30-39	40-49	≥ 50
		Mean (SD)	Mean (SD)	Mean (SD)	Mean (SD)	Mean (SD)	p-value
% of Sites with CAL (mm)	≥ 3	0.0 (0.0)	0.8 (6.6)	3.3 (13.7)	9.7 (22.7)	26.7 (29.7)	< 0.0005
	≥ 4	0.0 (0.0)	0.8 (6.6)	3.3 (13.8)	9.3 (22.6)	24.0 (28.0)	< 0.0005
	≥ 5	0.0 (0.0)	0.4 (4.0)	2.0 (8.9)	6.7 (13.4)	13.2 (18.2)	< 0.0005
	≥ 6	0.0 (0.0)	0.1 (2.3)	0.5 (3.6)	3.1 (11.0)	2.9 (8.2)	< 0.0005
% of sites with PD (mm)	≥ 3	20.9(26.6)	28.3 (31.0)	41.7(37.0)	44.9(36.5)	55.1 (33.9)	< 0.0005
	≥ 4	0.0 (0.0)	0.9 (6.0)	2.3 (11.3)	5.6 (19.2)	9.3 (18.6)	< 0.0005
	≥ 5	0.0 (0.0)	0.3 (2.9)	0.5 (3.3)	3.4 (13.2)	4.4 (10.3)	< 0.0005
	≥ 6	0.0 (0.0)	0.1 (0.4)	0.1 (0.7)	0.7 (3.1)	0.5 (2.2)	0.001
Disease Severity (mean)	GI	1.1 (0.78)	1.1 (0.7)	1.3 (0.6)	1.2 (0.6)	1.5 (0.5)	0.001
	CAL	0.0	0.0 (0.3)	0.2 (0.7)	0.5 (1.3)	1.3 (1.5)	< 0.0005
	PD	2.1 (0.4)	2.2 (0.5)	2.4 (0.5)	2.5 (0.7)	2.7 (0.6)	< 0.0005