3.4 Correlation analysis and multiple logistic regression analysis between sinus CT imaging findings and systemic eosinophilia
A positive and weak correlation was found between blood eosinophil count and PES score, ES score, SS score, ES/MS ratio and PES/AES ratio, but there was a moderate and positive correlation between OC score and the level of blood eosinophil count (r=0.57, P <0.001) (shown in Figure 3). We further determined the independent effects of PES score, ES score, SS score, ES/MS ratio, PES/AES ratio and OC score in predicting systemic eosinophilia by logistic regression model, the above mentioned factors were adjusted for clinical parameters, such as prior ESS, gender, AR, age and asthma (shown in Table 2). Only OC score was significantly associated with blood eosinophilia (P <0.001).