Correlation between Count and Ratio of Nasal eosinophil in Children with Nasal symptoms

Nasal eosinophilia assessment is used to help diagnose allergic rhinitis. Commonly, an eosinophil count ≥ 10/HPF or an eosinophil ratio ≥ 5–10% are used as cut-off values. However, no study has reported the correlation between these two cut-off values. The aim of this study was to investigate the correlation between the count and the ratio of nasal eosinophils in children with nasal symptoms, and to determine whether these two cut-off values are related to each other.