Demographic characteristics of participants
| Profession | n (%) |
| Trauma surgeon | 11 (50.0) |
| Emergency medicine physician | 5 (22.8) |
| Nurse | 4 (18.2) |
| Anesthesiologist | 1 (4.5) |
| Respiratory therapist | 1 (4.5) |
| Years in practice, mean (SD) | 8.2 (6.6) |
| Country of practice | n (%) |
| Canada | 15 (68.2) |
| USA | 7 (31.8) |