Table 2. Performance of the Internal Validation Set Based on the Threshold of the Model Output.

		AUROC (95% CI)	ACC	SEN	SPE	PPV	NPV
Threshold of model output		0.856 (0.818–0.889)
	0.01		0.527	1.000	0.055	0.514	1.000
	0.05		0.635	0.985	0.285	0.579	0.950
	0.1		0.663	0.965	0.365	0.601	0.911
	0.2		0.705	0.875	0.535	0.653	0.811
	0.3		0.748	0.810	0.685	0.720	0.783
	0.4		0.768	0.745	0.790	0.780	0.756
	0.5		0.783	0.695	0.870	0.842	0.740

ACC = accuracy, AUROC = area under the receiver operating characteristic curve, CI = confidence interval, NPV = negative predictive value, PPV = positive predictive value, SEN = sensitivity, SPE = specificity