Disagreement between the automated algorithm and the gold standard overall and by age, nature, body region and external cause of injury
| Key events | Readmissions (gold standard) | Disagreement | ||||
| n | n | % | n | % | 95% CI | |
| Total | 2000 | 200 | 10.0 | 43 | 2.2 | 1.6 to 2.9 |
| Age (years) | ||||||
| 0–14 | 389 | 40 | 10.3 | 6 | 1.5 | 0.6 to 3.3 |
| 15–24 | 410 | 38 | 9.3 | 12 | 2.9 | 1.5 to 5.1 |
| 25–64 | 798 | 83 | 10.4 | 15 | 1.9 | 1.1 to 3.1 |
| 65–79 | 197 | 16 | 8.1 | 3 | 1.5 | 0.3 to 4.4 |
| 80 or above | 206 | 23 | 11.2 | 7 | 3.4 | 1.4 to 6.9 |
| Nature of injury | ||||||
| Fracture | 833 | 113 | 13.6 | 23 | 2.8 | 1.8 to 4.1 |
| Dislocation | 57 | 5 | 8.8 | 4 | 7.0 | 1.9 to 17.0 |
| Internal organ injury | 145 | 19 | 13.1 | 0 | 0.0 | 0.0 to 2.5 |
| Open wound | 240 | 19 | 7.9 | 4 | 1.7 | 0.4 to 4.2 |
| Amputation | 21 | 3 | 14.3 | 1 | 4.8 | 0.1 to 23.8 |
| Blood vessel | 9 | 0 | 0.0 | 0 | 0.0 | 0.0 to 33.6 |
| Superficial and contusion | 98 | 4 | 4.1 | 1 | 1.0 | 0.0 to 5.6 |
| Crushing | 2 | 0 | 0.0 | 0 | 0.0 | 0.0 to 84.2 |
| Burn | 35 | 6 | 17.1 | 0 | 0.0 | 0.0 to 10.0 |
| Effects of foreign body entering orifice | 31 | 2 | 6.5 | 2 | 6.5 | 0.8 to 21.4 |
| Other effects of external causes | 5 | 0 | 0.0 | 0 | 0.0 | 0.0 to 52.2 |
| Poisoning | 142 | 2 | 1.4 | 1 | 0.7 | 0.0 to 3.9 |
| Toxic effects | 25 | 0 | 0.0 | 0 | 0.0 | 0.0 to 13.7 |
| Multiple injuries | 2 | 1 | 50.0 | 0 | 0.0 | 0.0 to 84.2 |
| Other specified injury | 245 | 20 | 8.2 | 5 | 2.0 | 0.7 to 4.7 |
| Unspecified injury | 84 | 4 | 4.8 | 2 | 2.4 | 0.3 to 8.3 |
| Not applicable | 26 | 2 | 7.7 | 0 | 0.0 | 0.0 to 13.2 |
| Body region | ||||||
| Extremities | 1162 | 131 | 11.3 | 29 | 2.5 | 1.7 to 3.6 |
| Head and neck | 394 | 31 | 7.9 | 11 | 2.8 | 1.4 to 4.9 |
| Spine and upper back | 79 | 14 | 17.7 | 2 | 2.5 | 0.3 to 8.9 |
| Torso | 166 | 20 | 12.0 | 0 | 0.0 | 0.0 to 2.2 |
| Unspecified | 199 | 4 | 2.0 | 1 | 0.5 | 0.0 to 2.8 |
| External cause | ||||||
| Unintentional transport | ||||||
| Motor vehicle crashes | 206 | 24 | 11.7 | 9 | 4.4 | 2.0 to 8.1 |
| Other land transport crashes | 137 | 19 | 13.9 | 1 | 0.7 | 0.0 to 4.0 |
| Other transport crashes | 10 | 1 | 10.0 | 0 | 0.0 | 0.0 to 30.8 |
| Unintentional non-transport | ||||||
| Falls | 759 | 85 | 11.2 | 16 | 2.1 | 1.2 to 3.4 |
| Other causes | 639 | 55 | 8.6 | 13 | 2.0 | 1.1 to 3.5 |
| Intentional self harm | 129 | 4 | 3.1 | 2 | 1.6 | 0.2 to 5.5 |
| Assault | 99 | 11 | 11.1 | 1 | 1.0 | 0.0 to 5.5 |
| Undetermined intent | 9 | 0 | 0.0 | 0 | 0.0 | 0.0 to 33.6 |
| Legal intervention | 0 | – | – | – | – | – |
| Medical and surgical | 11 | 0 | 0.0 | 0 | 0.0 | 0.0 to 28.5 |
| Sequelae | 1 | 1 | 100.0 | 1 | 100.0 | 2.5 to 100.0 |