IL6 and laryngotracheoesophageal cleft: Incorporating CRP, IL-6, and IGF-1 into the ROC curve model, the results showed that the AUC values of CRP, IL-6, and IGF-1 for predicting postoperative secondary infections in patients with LC were 0.701, 0.806, and 0.737, respectively, further confirming the reliability of the above speculation.