Patient demographics
| Gestalt (n=50) | 95% CI | WC (n=50) | 95% CI | |
| Age (mean) | 54 | 49 to 59 | 55 | 51 to 59 |
| Gender (% male) | 68 | 54 to 79 | 70 | 56 to 80 |
| BMI (mean) | 26.5 | 21 to 34 | 25.9 | 20 to 32 |
| Mallampati (mean) | 2.2 | 1.92 to 2.48 | 2.1 | 1.86 to 2.34 |
| Indication for intubation (%) | – | – | – | – |
| Pulmonary | 68 | 54 to 79 | 66 | 52 to 77 |
| Cardiac | 16 | 8 to 28 | 18 | 9 to 31 |
| Trauma | 10 | 25 to 21 | 12 | 5 to 24 |
| Other | 6 | 2 to 16 | 4 | 1 to 13 |
| ASA classification (mean) | 2.3 | 1 to 2.8 | 2.2 | 1 to 2.9 |
| SpO2 prior to preoxygenation (mean) | 92 | 85 to 94 | 91 | 84 to 93 |
| SpO2 after preoxygenation (mean) | 98 | 97 to 99 | 99 | 97 to 99 |
| Dose of rocuronium, mg/kg (mean) | 1 | 0.7 to 1.3 | 1 | 0.6 to 1.1 |
| Dose of succinylcholine, mg/kg (mean) | 1.2 | 0.9 to 1.5 | 1.1 | 0.8 to 1.4 |
| Level of training of proceduralist (%) | – | – | – | – |
| Attending | 2 | 1 to 13 | 1 | 0 to 10 |
| PGY-4 | 8 | 3 to 18 | 8 | 3 to 18 |
| PGY-3 | 56 | 42 to 68 | 58 | 44 to 70 |
| PGY-2 | 22 | 12 to 35 | 20 | 11 to 33 |
| PGY-1 | 10 | 4 to 21 | 12 | 5 to 24 |
| Cormack-Lehane grade view (mean) | 1.5 | 1 to 2.9 | 1.4 | 1 to 2.7 |
ASA, American Society of Anesthesia; BMI, body mass index; PGY, postgraduate year; WC, waveform capnography.