| AMI | acute myocardial infarction |
| CI | confidence interval |
| CPR | cardiopulmonary resuscitation |
| ECMO | extracorporeal membrane oxygenation |
| eCPR | ECMO-assisted cardiopulmonary resuscitation |
| HCUP | Healthcare Cost and Utilization Project |
| ICD-9CM | International Classification of Diseases-9 Clinical Modification |
| ICD-10CM | International Classification of Diseases-10 Clinical Modification |
| IHCA | in-hospital cardiac arrest |
| NIS | National/Nationwide Inpatient Sample |
| OR | odds ratio |
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