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Table 2 Distribution of clinical attachment loss (CAL) and pocket probing depth (PPD) amongst the dogs

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

  PPD ≥4 mm PPD <4 mm  
CAL1 mm 40 15 55
CAL < 1 mm 16 27 43
Total no. of dogs 56 42 98
  1. Cross tabulation of dogs according to their diagnosis with respect to the presence, respectively absence, of CAL ≥1 mm and PPD ≥4 mm.