Age, gender, previous infarction, previous heart failure, history of diabetes,hypertension, smoking status, serum creatinine,anterior location of infarction, ST-elevation infarction, Killip class at admission, thrombolytic therapy, primary angioplasty, coronary revascularization during hospital course,medical therapy(antiplatelet agents, blockers, angiotensin-converting-enzyme inhibitors,and statins),LVEF,baseline hemoglobin, and MCV