Table 2.

Diagnostic performance of AI system in internal validation and external evaluation cohort.

	Formulas	Internal validation cohort % (95% CI)	Formulas	External evaluation cohort % (95% CI)
Accuracy	177/190	93.1% (88.6%–96.0%)	221/241	91.7% (87.5%–94.6%)
Sensitivity	85/91	94.4% (86.4%–96.9%)	102/113	90.3% (83.4%–94.5%)
Specificity	92/99	93.0% (86.1%–96.5%)	119/128	93.0% (87.2%–96.3%)
PPV	85/92	92.4% (85.1%–96.3%)	102/111	91.9% (85.3%–95.7%)
NPV	92/98	93.8% (87.3%–97.2%)	119/130	91.5% (85.5%–95.2%)
AUC	0.949 (0.918–0.973)		0.948 (0.921–0.969)