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Table 1 Distributions for *Selected Clinical Periodontal Constructs (n = 706).

From: Evaluating clinical periodontal measures as surrogates for bacterial exposure: The Oral Infections and Vascular Disease Epidemiology Study (INVEST)

Variable 25th Median Mean 75th Std Dev
%AL ≥ 3 28 57 56 86 32
%AL ≥ 6 0 3 12 14 19
%AL ≥ 8 0 0 3 2 10
%PD ≥ 3 19 40 43 67 27
%PD ≥ 6 0 0 2 0 6
%PD ≥ 8 0 0 0.5 0 2
%BOP 3 13 33 50 46
#BOP 2 11 27 35 36
  1. Abbreviations: AL: Attachment loss PD: Pockect depth BOP: bleeding on probing 25th and 75th denote percentiles. % refers to percent of sites per mouth. # refers to the number of sites per mouth. *Note, distributional patterns across increasing severity cut points were similar for all clinical periodontal constructs (data not shown).