IL5 and asthma: Considering the relatively low sensitivity of the logistic regression model (73.6%), the pre-pruned decision tree was finally selected as the preferred prediction model; with an absence of asthma comorbidity plus blood eosinophil count ≤ 0.475*109/L and IL-5 concentration ≤ 15.04 pg/mL in NasSec shown to be suitable for distinguishing Th2lowCRSwNP patients from Th2highCRSwNP patients.