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Table 3 Correlations between Clinical Periodontal Constructs (n = 706)

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

  #PD ≥ 3 %PD ≥ 3 Mean PD ≥ 3 Sum PD ≥ 3 #AL ≥ 3 %AL ≥ 3 MeanAL ≥ 3 Sum AL ≥ 3
#PD ≥ 3 1 0.68 0.34 0.90 0.80 0.34 0.04 0.67
%PD ≥ 3   1 0.53 0.70 0.51 0.72 0.48 0.60
Mean PD ≥ 3    1 0.63 0.23 0.32 0.56 0.48
Sum PD ≥ 3     1 0.71 0.38 0.25 0.80
#AL ≥ 3      1 0.55 0.09 0.84
%AL ≥ 3       1 0.58 0.64
Mean AL ≥ 3        1 0.49
Sum AL ≥ 3         1
  1. Correlations between selected clinical periodontal constructs, holding severity threshold constant and allowing the extent definition to vary.
  2. # refers to number of sites/mouth beyond 3 mm severity threshold.
  3. % refers to percent of sites/mouth beyond 3 mm severity threshold.
  4. Mean refers to mean pocket depth among sites ≥ 3 mm severity threshold.
  5. Sum refers to cumulative pocket depth among sites ≥ 3 mm severity threshold.