Table 2. Demonstrates changes in mortality rates with adjustment of different criteria.

HR = hazard ratio; OR = odd ratio; CI = confidence interval; CAG = coronary angiography; PCI = percutaneous coronary intervention; AMI = acute myocardial infarction; COPD = chronic obstructive pulmonary disease; RR = relative risk; PTCA = percutaneous transluminal coronary angioplasty; CABG = coronary artery bypass graft

No	Author, reference	Unadjusted ratio	Adjusted ratio	Criteria adjusted
1	Attar R. et al [16]	5-year mortality HR 1.44 (95% CI 1.31-1.59)	HR 2.38 (95% CI 1.84-3.09)	Age, sex, smoking, comorbidities, previous CAG and previous PCI, discharge medication, and treatment with CAG and PCI.
2	Hauck T. S. et al [21]	Unavailable	HR 1.38 (95% CI 1.20-1.58)	Time-varying revascularization
3	Chang W. [22]	30-day mortality OR 1.67 (95% CI 1.40-1.98) 1-year mortality OR 1.67 (95% CI 1.44-1.95)	OR 1.99 (95% CI 1.65-2.39) 1-year mortality OR 2.13 (95% CI 1.79-2.54)	Age, sex, calendar-year period of index admission, and medical comorbidities.
4	Kugathasan P. [19]	HR 18.61 (95% CI 16.31-21.24)	HR 15.47 (95% CI 12.62-18.96)	Age at entry, gender, calendar year, diabetes, hypertension, hyperlipidemia, and COPD.
5	Schulman-Marcus J. [27]	In-hospital mortality OR 1.41 (95% CI 1.35-1.47)	OR 0.85 (95% CI 0.70-1.02)	Age, gender, race, payer, hospital characteristics, co-morbidities, previous revascularization, and cardiogenic shock.
6	Bodén R. [28]	Unavailable	30-day mortality OR 2.58 (95% CI 1.88-3.54) 1-year mortality OR 2.55 (95% CI 1.98-3.29)	Age, gender, smoking, diabetes, previous hypertension, heart failure, stroke, peripheral vascular disease, infarction type, Killip classification, biomarker level, acute treatments, and secondary preventative drugs.
7	Wu S. I. [29]	Unavailable	In-patient mortality OR 2.68 (95% CI 1.73-4.58)	Demographic characteristics (age at first AMI, level of income, and level of urbanization), medical disorders, cardiac history, hospital properties, inpatients complications, and any catheterization or revascularization receipt
8	Kurdyak P. [30]	OR 1.64 (95% CI 1.15-2.32)	OR 1.56 (95% CI 1.08-2.23)	Age, sex income, hospitalization length of stay, comorbidities (ambulatory diagnostic groups), rurality and cardiologist and primary care visits in the year prior to incident AMI.
9	Druss B. G. [20]	Unavailable	30-day mortality RR 0.95; P 0.18	Demographic variables, cardiac risk factors, and history, admission characteristics, left ventricular function availability of technology, and transfer status plus PTCA and CABG.