Patient characteristics
| n (%) | Mean (SD) | Median (range) | |
| All patients | 138 133 (100) | ||
| Emergency admissions | 108 865 (79) | ||
| Elective | 29 268 (21) | ||
| Male | 64 596 (47) | ||
| Female | 73 537 (53) | ||
| Age | 62.93 (20.61) | 66.64 (16.03–106.14) | |
| Under 65 | 64 984 (47) | ||
| 65 to <75 | 25 223 (18) | ||
| 75 to <85 | 28 316 (21) | ||
| 85+ | 19 610 (14) | ||
| Charlson Comorbidity Index* | 6.08 (84.26) | 3 (0–98) | |
| 0 | 68 682 (50) | ||
| 1–2 | 231 (0.2) | ||
| 3–4 | 20 385 (15) | ||
| 5+ | 48 663 (35) | ||
| SHMI risk | 0.06 (0.10) | 0.01 (0.00–0.85) | |
| First NEWS | 1.73 (2.03) | 1 (0–19) | |
| Low risk (NEWS≤2) | 102 674 (74) | ||
| Medium risk (NEWS≥3 and NEWS≤5) | 27 409 (20) | ||
| High risk (NEWS≥6) | 8050 (6) | ||
| Length of stay | 6.81 (12.63) | 2.73 (0.15–933.33) |
*Charlson. et al 30
CMI, Charlson Comorbidity Index; NEWS, National Early Warning Score; SHMI, Summary Hospital Mortality Indicator.