| ATC | Anatomical Therapeutic Chemical |
| ASA | acetylsalicylic acid |
| CAA | coronary artery aneurysm |
| CI | confidence interval |
| CS | corticosteroid |
| HR | hazard ratio |
| ICD | International Classification of Diseases |
| IPTW | inverse probability of treatment weighting |
| IQR | interquartile range |
| IVIg | intravenous immunoglobulin |
| KCD | Korean Standard Classification of Diseases and Causes of Death |
| KD | Kawasaki disease |
| NHI | National Health Insurance |