The primary efficacy endpoint was a composite of Thrombolysis in Myocardial Infarction (TIMI) flow grade 0 or 1 on angiography or death or recurrent myocardial infarction prior to angiography. Odds ratios (OR) are adjusted for age, sex, region, hypertension, diabetes, infarct location, time to fibrinolytic therapy, and type of fibrinolytic. For each subgroup, the size of the box is proportional to the number of individuals included in the analysis. The horizontal lines represent the 95 percent confidence intervals (CI).