Hazard ratios of the primary and secondary composite endpoints in subgroups of patients during 1-year follow-up. Boxes and lines are the adjusted point estimates with 95% robust confidence intervals for the main composite outcome of re-infarction or all-cause death, and the secondary extended composite outcome of re-infarction, all-cause death, stroke, hospitalization for heart failure, or new-onset atrial fibrillation in patients with ≥50% of the target β-blocker dose vs. <50% of the target β-blocker dose during 1-year follow-up. HR, hazard ratio.