Table 3

Levels of significance (p value)* for tests of differences between means of logged concentrations of benzene and naphthalene in air and in post-exposure breath

ComparisonConcentration in airConcentration in breath
BenzeneNaphthaleneBenzeneNaphthalene
*With Bonferroni correction for multiple comparisons.
NS, not significant (p>0.05).
Low v moderate<0.0001<0.0001NSNS
Moderate v high<0.0001<0.0001<0.01<0.0001
Low v high<0.0001<0.0001<0.0001<0.0001