Variables in model IV, and their effects on mortality.

ORs for variables with multiple levels (country, diagnosis, and predominant symptoms) are not shown. The variables that were dropped out of the multivariable logistic regression using the stepwise-backward elimination method included: smoking, BMI, history of hypertension and hyperlipidaemia, clopidogrel as discharge medication, PCI, and CABG.*Predominant presenting symptoms includes: ischemic type chest pain, atypical chest pain, dyspnea, fatigue, loss of consciousness, cardiac arrest/aborted sudden death, palpitation and other symptoms.Abbreviations: OR, odds ratio; CI, confidence interval; BB, beta-blockers; CCB, calcium channel blockers; ACE, angiotensin-converting enzyme inhibitors; AIIRB, angiotensin II receptor blockers.