Fig. 1

Forrest plot demonstrating Hazard ratio for mortality in patients with myocardial injury compared with no myocardial injury. Horizontal lines represent 95% confidence intervals (CI). The rectangles represent the point estimate, and the size of the rectangle is proportional to the weight given to each study in the meta-analysis. The diamond represents the summary estimate (size of the diamond = 95% CI). The vertical line represents the reference of no increased risk. The study by Lala et al. is divided into Lala a and Lala b. Lala a includes patients with troponin I > 0.03–0.09 ng/ml, Lala b includes patients with troponin I > 0.09 in the myocardial injury group