Supplementary Material for: Treatment and 30-day mortality after myocardial infarction in prostate cancer patients: A population-based study from Norway

Introduction: There is limited knowledge about the use of invasive treatment and mortality after acute myocardial infarction (AMI) in prostate cancer patients. We therefore wanted to compare rates of invasive treatment and 30-day mortality between AMIs in patients with prostate cancer (PCa) and AMIs in the general Norwegian male population.

Methods: Norwegian population-based registry data from 2013−2019 were used in this cohort study to identify AMIs in patients with a preceding PCa diagnosis. We compared invasive treatment rates and 30-day mortality in AMI patients with PCa to the same outcomes in all male AMI patients in Norway. Invasive treatment was defined as performed angiography with or without percutaneous coronary intervention or coronary artery bypass graft surgery. Standardized mortality (SMR) and incidence ratios (SIR), and logistic regression were used to evaluate the association between PCa risk groups and invasive treatment.

Results: In 1018 patients with PCa of all risk groups, the total rates of invasive treatment for AMIs were similar to the rates in the general AMI population. In patients with ST-segment elevation AMIs, rates were lower in metastatic PCa compared to localized PCa (OR 0.15, 95% CI 0.04–0.49). For non-ST-segment elevation AMIs there were no differences between PCa risk groups. The 30-day mortality after AMI was lower in PCa patients than in the total population of similarly aged AMI patients (SMR 0.77, 95% CI 0.61–0.97).

Conclusion: Except for patients with metastatic PCa experiencing an ST-segment elevation AMI, PCa patients were treated as frequent with invasive treatment for their AMI as the general AMI population. 30-day all-cause mortality was lower after AMI in PCa patients compared to the general AMI population.