Table 7.

Measures of Reclassification from the Romano/Charlson Score and the van Walraven/Elixhauser Score to the Combined Score

	From Romano/Charlson Score			From van Walraven/Elixhauser Score
	% Reclassified	NRI, % (p value)	IDI, % (p value)	% Reclassified	NRI, % (p value)	IDI, % (p value)
30-day mortality	9.2	11.8 (<0.001)	0.9 (0.16)	9.6	7.2 (<0.001)	0.6 (0.16)
90-day mortality	13.5	7.3 (<0.001)	1.3 (0.15)	13.9	6.3 (<0.001)	1.0 (0.15)
180-day mortality	13.4	5.2 (<0.001)	1.4 (0.15)	13.8	6.1 (<0.001)	1.4 (0.15)
1-year mortality	15.2	5.1 (<0.001)	1.5 (0.43)	15.2	6.3 (<0.001)	1.8 (0.42)

NRI, net reclassification index; IDI, integrated discrimination improvement