Table 7. External validation discriminative performance of CROUD.

Database	Number of Patients	Patients with opioid use disorder (%)	CROUD model AUC
OPTUM (Development Data)	2,897,134	4,262 (0.15%)	0.72
CCAE	4,540,979	4,376 (0.10%)	0.77
MDCD	579,563	1,691 (0.29%)	0.83
MDCR	630,022	264 (0.04%)	0.75