Table 5.

Assessment and validation of the prediction model.

Parameter	Dataset
	Training group	Testing group	External validation
AUC (95% CI)	0.791 (0.766–0.816)	0.780 (0.743–0.816)	0.758 (0.756–0.761)
Accuracy (95% CI)	0.730 (0.705–0.755)	0.697 (0.660–0.734)	0.696 (0.627–0.766)
Sensitivity (95% CI)	0.822 (0.792–0.853)	0.804 (0.756–0.851)	0.756 (0.661–0.852)
Specificity (95% CI)	0.642 (0.604–0.679)	0.605 (0.551–0.659)	0.644 (0.546–0.743)

Note. AUC: area under the curve; CI: confidence interval.