Value of serum pepsinogen ratio screening for early gastric cancer and precancerous lesions in Youcheng area

Figure 2 Receiver operating characteristic curves analysis of the effectiveness of pepsinogen ratio and Helicobacter pylori in distinguishing benign lesions from precancerous lesions. A: Receiver operating characteristic (ROC) curves analysis of the effectiveness of pepsinogen ratio in differentiating benign lesions from precancerous lesions (PCLs); B: ROC curves analysis of the effectiveness of Helicobacter pylori in distinguishing benign lesions from PCLs; C: ROC curves analysis of the effectiveness of pepsinogen ratio + Helicobacter pylori in distinguishing benign lesions from PCLs. PGR: Pepsinogen ratio; HP: Helicobacter pylori.