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Table 3 Prevalence and severity of periodontitis in RA patients and controls

From: Association between severity of periodontitis and clinical activity in rheumatoid arthritis patients: a case–control study

  RA patients Controls p
N % Mean (SD) N % Mean (SD)
Periodontitisa        
 Level 0 5 2.67   53 33.76   < 0.001
 Level 1 98 52.41   85 54.14   
 Level 2 84 44.92   19 12.1   < 0.001
 Level 1 + 2 182 97.33   104 66.24   < 0.001
Periodontal variables
 Mean PI   0.74 (0.48)   0.56 (0.40) < 0.001
 Mean PPD   3.08 (0.63)   2.69 (0.48) < 0.001
 CAL   3.99(1.27)   3.34 (1.03) < 0.001
 Tooth loss   6.31 (5.28)   4.01 (4.48) < 0.001
 N° PPD ≥ 5 mm   14.60 (17.03)   6.37 (11.50) < 0.001
 % PPD ≥ 5 mm   0.12 (0.14)   0.05 (0.08) < 0.001
 % BoP   0.63 (0.23)   0.42 (0.26) < 0.001
  1. Data represent number, percentage or mean (SD)
  2. % BoP percentage of sites with bleeding on probing, CAL clinical attachment level, %PPD ≥ 5 mm percentage of pockets ≥ 5 mm, N° PPD ≥ 5 mm number of pockets ≥ 5 mm, PI plaque index, PPD probing pocket depth, RA rheumatoid arthritis, SD standard deviation, Tooth loss number of missing teeth
  3. aLevel 1, periodontitis; Level 2, periodontitis according to Tonetti’s classification [26]