IL5 and schizophrenia: Correlation analysis revealed that in patients with schizophrenia, IL-5 levels were positively correlated with EOS (r = 0.338, p < 0.001), and EOS levels were positively associated with disease duration (r = 0.171, p < 0.05), the ROC curve analysis revealed that IL-5 had a sensitivity of 52.9%, specificity of 69.4%, and a cut-off value of 2.445 pg/mL for predicting schizophrenia.