Subgroup analysis moderate/severe eosinophilia group
polyp, eosinophilia
SECONDARY, EOSINOPHILIA
Tissue eosinophil counts were assessed by the Department of Pathology, University of Erlangen-Nürnberg on the polyp tissue collected during surgery (0=no eosinophils, 1=mild eosinophilia, 2=moderate eosinophilia, 3=severe eosinophilia). In detail, 0 equals no eosinophils, 1 equals scattered eosinophils distributed in the tissue, 2 equals smaller accumulations of eosinophils at individual sites in the tissue and 3 equals large clusters of eosinophils covering the entire tissue. In order to determine whether tissue eosinophilia levels have an impact on primary and secondary outcome measures, we performed a subgroup analysis comparing all patients graded into the moderate and severe eosinophilia group with the rest of the included patients.