Table 4. ROC analysis of large tumor groups and small tumor groups.

Items	GST-L vs. GS-L	GST-S vs. GS-S
AUC	0.983	0.931
Accuracy	95.5	77.8
Sensitivity	92.3	81.6
Specificity	95.7	92.2
Positive predictive value	63.2	48.7
Negative predictive value	99.4	94.4

AUC, area under the ROC curve; GS, gastric schwannoma; GST, gastric stromal tumor; GST-L/GS-L/GST-S/GS-S, large or small GST/GS; ROC, receiver operating characteristic.