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Table 2 Demography, pre-treatment clinical and CADIA sites profiles of participants

From: Adjunctive use of modified Yunu-Jian in the non-surgical treatment of male smokers with chronic periodontitis: a randomized double-blind, placebo-controlled clinical trial

Characteristic Categories Placebo (n = 14) mYJ (n = 11) Test Statistics P value
Age mean ± SD 43.6 ± 7.6 49.0 ± 5.0 t 2.0317 0.0539
Smoking habit (self-reported)
Baseline Smoked years 22.4 ± 7.7 25.0 ± 8.1 t 0.8193 0.4210
Cigarettes/day 20.0 ± 9.2 22.3 ± 8.2 t 0.6502 0.5220
Pack-years 22.2 ± 11.0 30.2 ± 21.4 t 1.2140 0.2371
End of study Cigarettes/day 18.6 ± 7.6 21.4 ± 7.8 t 0.9040 0.3754
Full-mouth parameter
Standing teeth mean ± SD 23.1 ± 3.5 21.4 ± 3.2 t 1.272 0.2166
Plaque  % mean ± SD 89.4 ± 4.4 88.3 ± 7.1 t 0.3991 0.6954
BOP % mean ± SD 83.7 ± 11.9 86.8 ± 13.2 t 0.6085 0.5497
% PPD ≥ 5 mm mean ± SD 42.7 ± 19.4 44.6 ± 20.1 t 0.2382 0.8140
% PAL ≥ 7 mm mean ± SD 80.6 ± 13.1 73.3 ± 21.0 t 1.009 0.3290
CADIA sites (2/participant)
Tooth type Incisor 8/0 (8)a 6/1 (7) χ2 2.487 0.2884
Canine 7/5 (12) 3/2 (5)    
Premolar 4/4 (8) 5/5 (10)    
Plaque  % 100 100    
BOP % 90.8 96.1 χ2 1.255 0.2626
PPD mean ± SD 6.17 ± 1.68 6.33 ± 1.23 t 0.592 0.5598
PAL mean ± SD 9.86 ± 2.23 9.02 ± 1.53 t 1.066 0.2977
  1. BOP bleeding on probing, PAL probing attachment level, PPD probing pocket depth
  2. aUpper/lower teeth (total)