Fig. 2

In-hospital mortality rates of patients with acute myocardial infarction categorized by age at presentation. There were 42, 167, 322, 167, and 14 patients in the ≤ 44 year, 45–59 year, 60–74 year, 75–89 year, and ≥ 90 year age groups, respectively. The corresponding mortality rates for each group were 7.1%, 10.8%, 21.1%, 55.1%, and 75.6%