. Author manuscript; available in PMC: 2010 Oct 29.

Published in final edited form as: Circ Cardiovasc Imaging. 2010 Jul 14;3(5):527–535. doi: 10.1161/CIRCIMAGING.109.900761

Table 5.

Predictors of MRI-derived percent infarct size (n=50).

Variable	r	Beta-estimate	95% CI	P value
*Univariable predictors of IS*
AAR by MRI, %	0.74	0.76	0.56, 0.96	<0.0001
APPROACH Lesion Score, %	0.67	0.70	0.47, 0.93	<0.0001
DUKE Jeopardy Score, %	0.39	0.48	0.23, 0.72	0.0055
STEMI	0.39	10.7	2.98, 18.42	0.008
Sum of Rentrop's collateral grade and TIMI flow grade at initial angiography	-0.38	-3.80	-6.58, -1.01	0.009
Pulse pressure, mmHg	-0.35	-0.21	-0.38, -0.04	0.019
Insulin therapy	0.33	9.7	0.89, 18.51	0.032
TIMI flow grade post-procedure, 0/1, 2, 3	-0.28	-4.41	-9.0, 0.18	0.059

*Multivariable predictors of IS*
AAR	-	0.69	0.46, 0.92	<0.0001
Sum of collateral and baseline TIMI flow grades at initial angiography	-	-1.87	-4.00, 0.26	0.084
TIMI flow grade post-PCI	-	-3.83	-7.28, -0.38	0.031

The R² value for the multivariable model was 0.69. Variables which were prospectively determined as potential determinants of MI (e.g. AAR) rather than consequences of MI (e.g. ejection fraction, LV volumes) were tested.