| AMR | Atrial mitral regurgitation |
| EM | excess mortality |
| FMR | functional mitral regurgitation |
| INE | National institute of statistics |
| LVEF | Left Ventricle Ejection Fraction |
| OMR | organic mitral regurgitation |
| OMT | optimal medical treatment |
| OS | observed survival |
| RS | relative survival |
| TEER | Transcatheter edge-to-edge repair |
| VMR | ventricular mitral regurgitation |
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