Table. Summary characterization of pediatric AR clusters.

Cluster	Description	No. of sensitized allergens	Type 2 inflammation	BHR	Airway function impairment	Nasal symptoms	Asthma morbidity
1 (13.3%)	NAR dominant cluster with low type 2 inflammation	+−	+	+	−	+	−
2 (47.3%)	Intermediate type 2 inflammation and low BHR	++	++	+	−	++	+
3 (27.0%)	High type 2 inflammation and intermediate BHR	++	+++	++	−	++	+
4 (12.4%)	High type 2 inflammation and BHR	++	+++	+++	+	++	++

BHR, bronchial hyper-responsiveness; NAR, non-allergic rhinitis.