ACE and diabetes mellitus: In a logistic regression model that checked severity (including Killip class on admission, age, sex, ECG pattern), complications, comorbidity (including diabetes), access to coronary care unit and use of invasive interventions, the pharmacological interventions that presented a significant association with smaller chance of death were: use of aspirin (OR 0.30 with 95% CI 0.12 to 0.79, P = 0.01), beta blockers (OR 0.31 with 95% CI 0.14 to 0.70, P = 0.005) and ACE inhibitors (OR 0.44 with 95% CI 0.20 to 0.95, P = 0.04).