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Table 5 Hierarchical identification of dogs with recordings of pocket probing depth (PPD) ≥4 mm

From: Screening for periodontal disease in research dogs - a methodology study

Tooth- pair examined

All dogs (N = 98)

% PPD positive dogs found

% PPD positive teeth found

NPV* dogs

Man C

57.1

81.6

0.64

+Max C

82.1

94.2

0.81

+Max I2

85.7

95.5

0.84

+Man P4

89.3

96.4

0.88

+Max M2

92.9

97.3

0.91

+Max P4

95.5

97.8

0.93

+Max P3

96.4

98.7

0.95

+Max P2

98.2

99.6

0.98

+Max I1

100

100

1.00

  1. The proportion of the total number of PPD positive dogs, respectively, teeth that are identified by examination of the indicated tooth pairs (sensitivity). Also given for each combination of tooth-pairs is the proportion of test-negative dogs that are truly negative for the presence of PPD ≥4 mm.
  2. *Negative predictive value of screen test at dog level.