| ARDS | Acute Respiratory Distress Syndrome |
| AUC | Area Under the Curve |
| BMI | Body Mass Index |
| CI | Confidence Interval |
| CRP | C-Reactive Protein |
| DAMA | Discharged Against Medical Advice |
| HbA1c | Glycated Hemoglobin |
| hMPV | Human Metapneumovirus |
| IQR | Interquartile Range |
| OR | Odds Ratio |
| OTI | Orotracheal Intubation |
| PCR | Polymerase Chain Reaction |
| ROC | Receiver Operating Characteristic |
| RSV | Respiratory Syncytial Virus |
| Rx | Radiological Severity Score/Parenchymal Involvement |
| SARS-CoV-2 | Severe Acute Respiratory Syndrome Coronavirus 2 |