Table 3.

Concordance index (C-index) and area under receiver operating characteristic curve (AUROC) for the hybridized ML model and reference models, confidence interval inside paranthesis

	Hybridized ML model		Expert-based model		Calcium score-based model
	Training	Testing	Training	Testing	Training	Testing
C-index	.85 (.75–.95)	.81 (.67–.95)	.72 (.61–.84)	.71 (.55–.87)	.65 (.54–.77)	.64 (.49–.79)
AUROC	.89 (.81–.97)	.76 (.63–.93)	.76 (.66–.86)	.67 (.50–.84)	.68 (.59–.78)	.64 (.49–.79)