Serum level of TSGF, CA242 and CA19-9 in pancreatic cancer

Table 2 Evaluation of the value of diagnosis in pancreatic cancer by a single tumor marker of 96 cases

Value of diagnosis	Sensitivity (%)	Specificity (%)	Positive Likelihood ratio	Negative Likelihood ratio
TSGF	91.6 (88) a	83.0	5.4	0.10
CA242	82.3 (79)	93.5b	12.6	0.19
CA19-9	85.4 (82)	86.5	6.3	0.17

(), No. of cases;

^aP < 0.05,

^bP < 0.01 vs the other two indexes. sensitivity = truepositive/patients × 100% = TP/(TP + FN) × 100%, specificity = true negative/normal × 100% = TN/(TN + FP) × 100% positive likelihood ratio = true positive/false positive = sensitivity/(1-specificity) negative likelihood ratio = (1-true positive)/(1-false positive) = (1-sensitivity)/specificity.