Table 1: Statistical correlation between the bronchial versus nasal in vitro data.

Between the backbone valuesBetween the fold change of genes expression
Comparison groupPearson correlationSpearman correlationPearson correlationSpearman correlation

Bronchial in vitro versus nasal in vitro (4 h after exposure)0.970.950.720.55
Bronchial in vitro versus nasal in vitro (24 h after exposure) 0.930.940.620.49
Bronchial in vitro versus nasal in vitro (48 h after exposure)0.770.860.390.37

P values < 0.05 for all comparisons.