| AC | Autonomous Community |
| ARRUP | Ramp Duration Until the Peak |
| CCC | COVID-19 Control Center |
| CoM | Autonomous Community of Madrid |
| COVID-19 | Coronavirus Disease 2019 |
| CS | Consejería de Sanidad—Departments of Health |
| DEA | Data Envelopment Analysis |
| ICU | Intensive Care Unit |
| LHM | Linear Hinges Model |
| non-ICU | Non-Intensive Care Unit |
| RDUP | Ramp Duration Until the Peak |
| RGUP | Ramp Growth Until the Peak |
| SARS-CoV-2 | Severe Acute Respiratory Syndrome Coronavirus 2 |
| SNS | Sistema Nacional de Salud—Spanish National Health System |