Table 3.
Specialty case mix in the derivation and validation cohorts
| No. of patients | |||
|---|---|---|---|
| Derivation | Validation | Total | |
| Abdominal (bariatric) | 46 | 28 | 74 |
| Abdominal (endocrine) | 4 | 0 | 4 |
| Abdominal (gastrointestinal) | 1802 | 864 | 2666 |
| Abdominal (hepatobiliary) | 440 | 222 | 662 |
| Body surface (breast) | 561 | 274 | 835 |
| Body surface (other) | 389 | 200 | 589 |
| Endocrine | 142 | 72 | 214 |
| Gynaecology | 1164 | 594 | 1758 |
| Head and neck | 848 | 409 | 1257 |
| Ophthalmology | 126 | 73 | 199 |
| Orthopaedics | 3945 | 1958 | 5903 |
| Thoracic | 120 | 71 | 191 |
| Urology | 1135 | 569 | 1704 |
| Vascular | 497 | 235 | 732 |
| Total | 11 219 | 5569 | 16 788 |