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. 2020 Dec 20;11(4):342–349. doi: 10.4103/ccd.ccd_97_18

Table 2.

Comparison of mean serum TNF-α cytokines among smokers & non-smokers healthy subjects

Groups n Serum TNF-α cytokines

Mean±SD Median Range
Healthy 15 0.867±0.865 0.47 0.116-2.87
CGP 15 2.977±1.011 3.26 1.11-4.50
Mann-Whitney U-test value 28.000
Significance P 0.001 (HS)

TNF-α: Tumor necrosis factor-alpha; CGP: Chronic generalized periodontitis; SD: Standard deviation; HS: Highly significant