Analyte Short term variability Long term variability ICC nasal mucus ICC EBC ICC nasal mucus ICC EBC IFN-γ 0.96 0.08 0.72 0.26 IL-1β 0.96 / 0.90 / IL-8 / 0.44 / 0.19 IL-10 0.87 / 0.84 0.23 IL-13 0.77 0.32 0.87 0.33 TNF-α 0.93 0.23 0.89 0.51

Table 3: The calculated intra-class correlation coefficient (ICC) of the measurements in nasal mucus and EBC per analyte for the short and long term follow-up. /: below or above standard curve range