| ACEi | angiotensin-converting enzyme inhibitors |
| ARBs | angiotensin II receptor blockers |
| CCBs | calcium channel blockers |
| CGRP | calcitonin gene-related peptide |
| GI | gastrointestinal |
| HIRA | Health Insurance Review & Assessment Service |
| IBD | inflammatory bowel disease |
| IBS | irritable bowel syndrome |
| ICD-10 | International Classification of Diseases-10 |
| KCD-7 | Korean standard classification of disease and cause of death-7 |
| NPS | national patient sample |
| NPY | neuropeptide Y |
| NSAIDS | nonsteroidal anti-inflammatory drugs |
| OR | odds ratio |
| ORadj | adjusted odds ratio |
| PUD | peptic ulcer disease |
| SSRI | selective serotonin reuptake inhibitor |
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