Baseline characteristics (expressed as n (%) or median (IQR))
| Number of patients operated | 358 |
| Number of patients operated for MSP | 341 (95%) |
| MSP patient characteristics | |
| Age (years) | 35 (24–50) |
| Gender (male) | 244 (71.5) |
| Age <16 years | 51 (14.9) |
| Age >60 years | 20 (5.8) |
| Circumstances of management | |
| Emergencies | 25 (7.3) |
| Penetrating injuries | 5 (1.4) |
| Blunt injuries | 4 (1.1) |
| Non-traumatic emergencies | 16 (4.7) |
| Elective surgery | 316 (92.7) |
| Operative characteristics | |
| Number of procedures | 385 |
| General surgery | 146 (37.9) |
| Parietal surgery | 102 (26.5) |
| Non-parietal surgery | 44 (11.4) |
| ENT | 6 (1.5) |
| Urology | 18 (4.7) |
| Gynaecology | 21 (5.5) |
| Orthopaedic | 125 (32.5) |
| Soft tissue | 67 (17.4) |
| Vascular | 2 (0.5) |
| Number of procedures by patient | 1 (1–1) |
| Number of anaesthetic procedures by patient | 1 (1–2) |
ENT, ear, nose, throat; MSP, medical support to the population.