Individual participant characteristics
| Pit-crew training (N=30) | Standard training (N=30) | |
| Gender | ||
| Male, n (%) | 12 (40.0) | 14 (46.7) |
| Health profession, n (%) | ||
| Doctor | 9 (30) | 14 (46.7) |
| Nurse | 21 (70.0) | 12 (40.0) |
| Operating department practitioner | – | 1 (3.3) |
| Paramedic | – | 2 (6.7) |
| Other | – | 1 (3.3) |
| Professional experience, years, median (IQR) | 13.5 (6.3–21.3) | 8.0 (3.8–13.5) |
| Grade, n (%) | ||
| Band 5/FY1 | 3 (10.0) | 5 (16.7) |
| Band 6/SHO | 8 (26.7) | 11 (36.7) |
| Band 7/registrar | 14 (46.7) | 9 (30.0) |
| Band 8+/consultant | 5 (16.7) | 5 (16.7) |
| Current speciality, n (%) | ||
| Acute medicine | 6 (20.0) | 5 (16.7) |
| Critical care | 11 (36.7) | 20 (66.7) |
| Emergency medicine | 6 (20.0) | 2 (6.7) |
| Surgery | 3 (10.0) | 2 (6.7) |
| Other | 4 (13.3) | 1 (3.3) |
| Resuscitation qualification, n (%) | ||
| Immediate Life Support provider | 7 (23.3) | 7 (23.3) |
| Advanced Life Support provider | 12 (40.0) | 17 (56.7) |
| Advanced Life Support instructor | 11 (36.7) | 6 (20.0) |
| Approximate number of cardiac arrests attended in last 6 months, median (IQR) | 4.5 (2.0–10.0) | 8.0 (1.8–15.8) |
| Previously received device training, yes, n (%) | 7 (23.3) | 4 (13.3) |
| Previous use of a device in clinical practice, yes, n (%) | ||
| If yes, which device, n (%) | 18 (60.0) | 17 (56.7) |
| LUCAS | 10 (55.6) | 8 (47.1) |
| AutoPulse | 11 (61.1) | 10 (58.8) |
| Thumper | 2 (11.1) | 1 (5.9) |
| If yes, how many times used, median (IQR) | 2.5 (1.0–5.8) | 3.0 (1.5–4.5) |