Table 2.

Correlations between Clinical Periodontal Constructs (n = 706)

	%PD ≥ 2	%PD ≥ 3	%PD ≥ 4	%PD ≥ 5	%PD ≥ 6	%PD ≥ 7	%PD ≥ 8
%PD ≥ 2	1	0.78	0.51	0.39	0.26	0.19	0.17
%PD ≥ 3		1	0.76	0.62	0.43	0.33	0.29
%PD ≥ 4			1	0.88	0.69	0.58	0.51
%PD ≥ 5				1	0.86	0.75	0.67
%PD ≥ 6					1	0.92	0.81
%PD ≥ 7						1	0.84
%PD ≥ 8							1

Correlations between selected clinical periodontal constructs holding extent definition (percent of sites with pocket depth) constant and allowing the severity threshold to vary.