Changing trends of previously diagnosed cardiovascular comorbidities by study year.
Notes: Multinomial logistic regression model adjusted for age, sex, race, marital status, type of myocardial infarction (Q wave versus non-Q wave) and acute hospital complications (atrial fibrillation, heart failure, cardiogenic shock). Relative risk ratios (95% CI) calculated from multinominal logistic regression model and referent group includes patients without any comorbidity.
Abbreviation: CI, confidence interval.