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Table 4 Pairwise comparison between the studied groups concerning levels of the measured biochemical parameters

From: Blood biomarkers of nicotine-induced toxicity in healthy males

Dependent variable

Group

Group

p value

8-OHdG (ng/ml)

Non-smokers

Passive smokers

0.985

Active smokers

Non-smokers

0.000**

Passive smokers

0.000**

Cotinine (ng/ml)

Non-smokers

Passive smokers

0.983

Active smokers

Non-smokers

0.000**

Passive smokers

0.000**

MDA (nmol/ml)

Non-smokers

Passive smokers

0.834

Active smokers

Non-smokers

0.000**

Passive smokers

0.000**

SOD (U/ml)

Non-smokers

Passive smokers

0.802

Active smokers

Non-smokers

0.000**

Passive smokers

0.000**

TAC (U/ml)

Non-smokers

Passive smokers

0.895

Active smokers

Non-smokers

0.000**

Passive smokers

0.000**

  1. **Highly significant p < 0.001
  2. 8-OHdG 8-hydroxy-2′-deoxyguanosine; MDA malondialdehyde; SOD superoxide dismutase; TAC total antioxidant capacity