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Table 1 Demographics and periodontal conditions in the study subjects.

From: Gene expression in periodontal tissues following treatment

  Test Control
Subjects (n) 12 11
Age (years) 46.6 38.5
± SD 11.7 5.6
Females 6 7
Smokers 4 3
Mean no. of teeth/subject ± SD 22.4 ± 5.9 27.36 ± 1.4
Mean % of sites with PPD 4–6 mm ± SD 42.2 ± 13.8 0
following SGD 30.6 ± 18.9 0
Mean % of sites with PPD ≥ 7 mm ± SD 18.9 ± 3.9  
following SGD 15.7 ± 5.8  
Mean % of sites with BOP ± SD 58.6 ± 29.8  
following SGD 19.3 ± 13.4  
  1. SD = standard deviation, SGD = subgingival debridement.