Table 3.

Confusion Table and Performance of the Prediction Model on the Discovery Cohort and the Validation Cohort

Cohort	Discovery Cohort (n=101)				Validation Cohort (n=139)
Data set	Training data set		Testing data set		Validation data set
Performance	Real GC	Real NC	Real GC	Real NC	Real GC	Real NC
Predict GC	38	0	14	2	44	14
Predict NC	0	32	3	12	10	71
Totals	38	32	17	14	54	85
Correct	38	32	14	12	44	71
Sensitivity	100.00%		82.35%		81.48%
Specificity		100.00%		85.71%		83.53%

Abbreviations: GC, Gastric cancer; NC, Negative control.