| CI | Confidence interval |
| COVID-19 | Coronavirus disease 2019 |
| DRG | Diagnosis Related Groups |
| ICD | International Classification of Diseases and Related Health Problems |
| OPS | Diagnostic, surgery and procedures codes (Operationen- und Prozedurenschlüssel) |
| MACCE | Major adverse cardiovascular and cerebrovascular events |
| MI | Myocardial infarction |
| PAD | Peripheral artery disease |
| RDC | Research Data Center |
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