Table 3. Summary Statistics of Models Predicting In-Hospital Mortality of Patients With Acute Myocardial Infarction in Korea, Japan, and Taiwan .

Statistic	Modela	Korea	Japan	Taiwan
AUC	1	0.703	0.657	0.674
	2	0.735	0.715	0.697
	3	0.732	0.713	0.698
Difference in AUCs	2−1	0.033	0.058	0.023
	3−2	−0.003	−0.002	0.001
ICC (%)	2	3.54	4.99	2.22
	3	2.22	4.54	1.80
Median OR	2	1.39	1.49	1.30
	3	1.30	1.46	1.26
PCV (%)	3−2	38.2	9.4	19.3

Abbreviations: AUC, Area under the receiver operating characteristic curve; ICC, Intraclass correlation coefficient; OR, odds ratio; PCV, Proportional change in variance.

^aModel 1, logistic regression with patient-level covariates; Model 2, multilevel logistic regression with patient-level covariates and random intercepts for hospitals; Model 3, multilevel logistic regression with patient-level and hospital-level covariates and random intercepts for hospitals.