Inter-rater agreement
| Agreement between investigators 1 and 2 (%) | Agreement between investigator and trainee (%) | |
| Grading of laryngeal view | 100 | # |
| Vocal cord not recognised | 87 | # |
| Could not advance beyond oral cavity | 100 | 100 |
| Could not visualise vocal cords | 77 | 100 |
| Excessive secretions | 77 | 100 |
| Oesophagus was intubated | 100 | 60 |