Patients’ demographics
| APACHE, Acute Physiology and Chronic Health Evaluation; ARDS, acute respiratory distress syndrome; ICU, intensive care unit. | |
| N | 3548 |
| Mean (SD) age (years) | 57.3 (17.3) |
| Gender (% male) | 54.7 |
| Mean (SD) APACHE II score | 23 (7.0) |
| Hospital mortality (%) | |
| Top 10 primary ICU admitting diagnoses, n (%) | |
| Septic shock | 427 (12.0) |
| Bacterial pneumonia | 300 (8.4) |
| Septicemia | 253 (7.1) |
| Inhalation pneumonitis (gastrointestinal contents) | 168 (4.7) |
| Non-cardiogenic pulmonary oedema (ARDS) | 145 (4.1) |
| Cardiogenic shock | 140 (3.9) |
| Primary brain injury | 131 (3.7) |
| Cardiogenic pulmonary oedema | 78 (2.2) |
| Exacerbation of chronic obstructive airway disease | 75 (2.1) |
| Pneumonia, no organism identified | 61 (1.7) |
| 1778 (43.2) | |
| Source of ICU admission | |
| Another ward | 2702 |
| Another hospital | 438 |
| Emergency | 405 |
| Total | 3545 (3 missing) |