Five clinical characteristics predict 90% of the mortality in patients who present with STEMI (see table Mortality Risk at 30 Days in STEMI and Risk of Adverse Events at 14 Days in NSTEMI): Older age (31% of total mortality) Lower systolic blood pressure (24%) Killip class > 1 (15%) Faster heart rate (12%) Anterior infarct location (6%) Mortality rates tend to be higher in women and in patients with diabetes.