Can Preoperative Examination Help Choose the Best Surgical Procedure in Gastric Cancer?

Table 5

Diagnostic value of tumor size and serum CEA when CT examination was negative.

Group	Sensitivity (%)	Specificity (%)	PPV (%)	NPV (%)	Accuracy (%)
Tumor size	57.9	72.8	19.0	94.0	71.35
CEA	47.4	80.9	21.4	93.3	77.60
Tumor size and CEA	31.6	95.3	42.9	92.7	89.00