Distribution of harm by severity and clinical setting
| Clinical area | HMX events (%) | Events <2 fold deviation (% of all HMX) | Low/no harm | Moderate | Severe | Total |
| Medical | 2423 (39.9) | 1771 (73%) | 380 | 246 | 26 | 652 |
| Critical care | 1579 (26) | 1184 (75%) | 148 | 171 | 76 | 395 |
| Surgical | 1303 (21.5) | 1012 (78%) | 202 | 78 | 11 | 291 |
| Paediatric | 665 (11) | 604 (91%) | 8 | 43 | 10 | 61 |
| Women’s care | 89 (1.5) | 75 (84%) | 8 | 6 | 0 | 14 |
| Theatres | 8 (0.1) | 6 (75%) | 1 | 1 | 0 | 2 |
| Total | 6067 | 4652 (77%) | 747 | 545 | 123 | 1415 |
HMX, hard maximum.