Comparison of the CAMI-NSTEMI and GRACE Risk Model for Predicting In-Hospital Mortality in Chinese Non-ST-Segment Elevation Myocardial Infarction Patients

Table 2

Reclassification table comparing the CRM to GRM.

	Risk category based on the CRM			Total	Reclassification		NRI^†
	Low	Medium	High		Up	Down
Risk category based on the GRM
Negative patients					0.0333	0.0707	0.3311	<0.0001
Low	932	37	38	1007
Medium	156	871	7	1034
High	6	12	402	420
Total	1094	920	447	2461
Positive patients^‡					0.3254	0.0317
Low	1	6	12	19
Medium	2	3	23	28
High	0	2	77	79
Total	3	11	112	126

The classification of patients by the CRM was compared to that by the GRM. ^†NRI = (P (Up|Positive)-P (Down|Positive)]-[ P (Up|Negative)-P (Down|Negative)). ^‡A positive patient was defined as a patient who died in hospital. NRI: net reclassification improvement; GRM: GRACE risk model; CRM: CAMI-NSTEMI risk model.