Characteristics of participants
| Variables | N=36 |
| Median age, year (IQR) | 33 (31–34) |
| Male sex, no. (%) | 11 (30.6%) |
| Mean body weight, kg (±SD) | 65.2 (±15.0) |
| Mean height, cm (±SD) | 162.3 (±6.7) |
| Mean BSA, m2 | 1.71 (±0.22) |
| Left-handed, no. (%) | 6 (16.7%) |
| Mean years in ED, year (±SD) | 5.6 (±2.0) |
| Postgraduate training level, no. (%) | |
| Year 1 | 16 (44.4%) |
| Year 2 | 7 (19.4%) |
| Year 3 | 3 (8.3%) |
| Year 4 | 10 (27.8%) |
BSA, body surface area calculated using the Mosteller formula.