Evaluation of the Canadian Clinical Practice Guidelines Risk Prediction Tool for Acute Aortic Syndrome: The RIPP Score

Table 5

Net reclassification index for risk prediction tools in comparison to the RIPP score. RIPP score performed better than all comparator scores in classifying cases of acute aortic syndrome, improving reclassification (range 11–34%). All comparator scores performed better than the RIPP score decreasing misclassification of those without acute aortic syndrome (6–18%).

	Net reclassification index	Low to high	High to low	value
ADDRS	0.05	−0.06	0.11
LOVY	0.16	−0.18	0.34
AORTAs	0.03	−0.08	0.11
Von Kodolitsch	0.20	−0.13	0.33
RIPP	—	—	—	—