Table 5.
Results of multiple linear regression analysis for clinical, echocardiographic, and angiographic factors correlated with IMR value.
| Parameter | Univariable analysis | Multiple analysis | ||||
|---|---|---|---|---|---|---|
| β | SE | P value | β | SE | P value | |
| Age | 0.35 | 0.14 | 0.017 | 0.23 | 0.16 | 0.538 |
| Male | −3.53 | 5.13 | 0.493 | |||
| Killip class | 13.65 | 3.10 | <0.001 | 8.18 | 2.89 | 0.006 |
| SHT∗ | 5.40 | 1.54 | <0.001 | 3.88 | 1.33 | 0.004 |
| LVEF | −0.67 | 0.23 | 0.005 | |||
| E/e' | 0.78 | 0.58 | 0.183 | |||
| WMSI | 17.12 | 5.49 | 0.002 | |||
| LV mass index | 0.18 | 0.07 | 0.018 | |||
| CK-MB peak∗ | 2.64 | 1.55 | 0.093 | |||
| Troponin-I peak∗ | 3.91 | 1.44 | 0.008 | 2.52 | 1.22 | 0.042 |
| NT-proBNP∗ | 5.08 | 1.43 | <0.001 | |||
| Multivessel disease | 11.47 | 3.44 | 0.001 | 9.09 | 2.93 | 0.003 |
| Initial TIMI 0-1 | 5.92 | 3.62 | 0.105 | |||
| Final TIMI 3 | −5.40 | 6.99 | 0.442 | |||
| Final TMPG 3 | −8.10 | 3.76 | 0.034 | −5.00 | 3.17 | 0.119 |
| Distal embolization | 14.17 | 4.44 | 0.002 | 8.38 | 3.88 | 0.034 |
β, Unstandardized coefficients; CK-MB, creatine kinase muscle/brain; LV, left ventricle; LVEF, left ventricular ejection fraction; NT-proBNP, N-terminal prohormone of brain natriuretic peptide; SE, standard error; SHT, symptom onset to hospital time; TIMI, thrombolysis in myocardial infarction; TMPG, thrombolysis in myocardial infarction myocardial perfusion grade; WMSI, wall motion score index. ∗Data were expressed as quartile (1st∼4th).