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Table 3 Statistical differences between groups.

From: Exhaled volatile organic compounds in patients with non-small cell lung cancer: cross sectional and nested short-term follow-up study

Ā  NSCLC vs. Controls COPD vs. Controls Smokers vs. Controls NSCLC vs. COPD NSCLC vs. Smokers COPD vs. Smokers
Isoprene n.s. n.s. n.s. p < 0.05 n.s. P < 0.01
2-Methylpentane p < 0.001 p < 0.05 p < 0.001 p < 0.001 n.s. P < 0.05
Pentane p < 0.001 p < 0.05 p < 0.05 n.s. n.s. n.s.
Ethylbenzene p < 0.01 p < 0.001 p < 0.001 p < 0.05 n.s. n.s.
Xylenes total p < 0.001 p < 0.001 p < 0.001 n.s. n.s. n.s.
Trimethylbenzene p < 0.01 p < 0.001 p < 0.001 n.s. n.s. n.s.
Toluene p < 0.001 n.s. p < 0.001 n.s. p < 0.001 P < 0.01
Benzene p < 0.001 n.s. p < 0.001 n.s. p < 0.001 P < 0.05
Heptane n.s. p < 0.01 p < 0.001 n.s. p < 0.001 n.s.
Decane p < 0.001 p < 0.01 n.s. n.s. n.s. n.s.
Styrene n.s. p < 0.001 n.s. p < 0.001 n.s. P < 0.001
Octane p < 0.001 p < 0.01 n.s. n.s. n.s. n.s.
Pentamethylheptane p < 0.001 n.s. p < 0.001 n.s. n.s. n.s.
  1. The significance of the multiple comparisons inside the individual univariate tests. ANOVA followed by Games Howell Post Hoc test for benzene and toluene, Kruskal-Wallis test followed by Dunn's Post Hoc test for all the other VOCs were performed.