Table 4.

Inter-hospital external validation result with AUROC (95% CI mortality) for each hospital.

AUROC (Original)	Validation cohort
Development cohort	Hospital A	Hospital B	Hospital C
Hospital A	0.913 (0.882–0.945)	0.9124 (0.884–0.9407)	0.928 (0.902–0.955)
Hospital B	0.893 (0.854–0.931)	0.919 (0.891–0.946)	0.930 (0.902–0.958)
Hospital C	0.885 (0.842–0.927)	0.929 (0.9015–0.950)	0.930 (0.899–0.960)
Overall	0.904 (0.866–0.942)	0.929 (0.9049–0.952)	0.933 (0.904–0.961)

AUROC area under the receiver operating characteristic.