3.2 Demographic and clinical characteristics of the retrospective cohort
To characterize the patients with systemic eosinophilia, the subjects were divided into B-high subgroup and B-low subgroup. There were 54 patients (40%) in the B-high subgroup and 81 patients (60%) in the B-low subgroup. The clinical features of two subgroups were shown in the Table 1. Patients in the B-low subgroup were younger than B-high subgroup (P =0.026). Moreover, compared with B-low subgroup, B-high subgroup showed higher percentage of AR (P =0.002) and asthma (P =0.012), higher preoperative L-M CT scores (P =0.014), higher blood and tissue eosinophil counts (BothP <0.001). Moreover, there was significantly different in the clinical disease control status between two subgroups (P =0.022). Compared to the B-low subgroup, the percentage of patients at the uncontrolled status was significantly higher in the B-high subgroup (P =0.026).