First-attempt success and intubation failure rates in unmatched and propensity score-matched groups
| GVL | MAC | GVL vs MAC (reference) | ||
|---|---|---|---|---|
| RR (95% CI) | p Value | |||
| All patients (n=4041) | ||||
| First-attempt success rate, n (%) | 463 (85.7) | 2880 (82.3) | 1.24 (0.99 to 1.55) | 0.051 |
| Intubation failure rate, n (%) | 45 (8.3) | 350 (10.0) | 0.98 (0.96 to 1.01) | 0.195 |
| Propensity score-matched patients (n=1089) | ||||
| First-attempt success rate, n (%) | 307 (84.6) | 641 (88.3) | 0.76 (0.56 to 1.04) | 0.084 |
| Intubation failure rate, n (%) | 32 (8.8) | 46 (6.3) | 1.03 (0.99 to 1.07) | 0.157 |
GVL, GlideScope video laryngoscope; MAC, Macintosh laryngoscope; RR, risk ratio.