Adjusted mortality for acute coronary syndrome without MI, microsize MI, and usual MI patients ACS=Acute Coronary Syndrome. ACS without MI=ACS with peak troponin below upper limit of normal (ULN) and adjudicated as no myocardial infarction (MI). Microsize MI=adjudicated MI with peak troponin above ULN but less than 5 times ULN. Usual MI=adjudicated MI with peak troponin 5 or more times above ULN. All mortality rates include only those surviving the previous period; e.g., 28-day mortality includes only those discharged alive. Total number of deaths: ACS without MI (in-hospital = 0, 28-day = 5, 1-year = 11); Microsize MI (in-hospital = 2, 28-day = 7, 1-year = 12); Usual MI (in-hospital = 7, 28-day = 12, 1-year = 15). ACS w/o MI vs. Microsize MI: In-Hospital p = 0.02 28-Day p = 0.26 1-Year p = 0.02. ACS w/o MI vs. Usual MI: In-Hospital p < 0.01 28-Day p = 0.11 1-Year p = 0.02. Microsize MI vs. Usual MI: In-Hospital p = 0.09 28-Day p = 0.93, 1-Year p = 0.64.