Table 4.
Multivariate Regression Model for first attempt success
| Variable | OR | 95% CI | P -value |
|---|---|---|---|
| Video laryngoscope as first device* |
7.67 |
3.18 to 18.45 |
<0.001 |
| Age |
1.02 |
1.00 to 1.04 |
0.04 |
| Gender** |
2.09 |
1.07 to 4.07 |
0.02 |
|
Method |
|
|
|
| No Medications |
(Reference) |
|
|
| RSI |
0.72 |
0.08 to 6.00 |
0.76 |
| Sedation only |
0.24 |
0.02 to 2.42 |
0.22 |
|
Operator Specialty |
|
|
|
| Non-intensivist |
(Reference) |
|
|
| Pulmonary and Critical Care Medicine |
5.59 |
1.09 to 28.64 |
0.04 |
|
Operator PGY |
|
|
|
| 1 |
(Reference) |
|
|
| 2 |
3.19 |
0.97 to 10.51 |
0.06 |
| 3 |
0.66 |
0.20 to 2.13 |
0.48 |
| 4 |
0.53 |
0.06 to 4.33 |
0.55 |
| 5 |
0.36 |
0.04 to 3.22 |
0.36 |
| 6 |
0.51 |
0.05 to 4.88 |
0.56 |
| Attending |
3.0 |
0.11 to 77.74 |
0.51 |
|
Difficult Airway Predictors |
|
|
|
| Total DACs |
0.44 |
0.13 to 1.51 |
0.20 |
| Blood |
1.79 |
0.39 to 8.33 |
0.45 |
| Vomit |
0.84 |
0.15 to 4.66 |
0.84 |
| Cervical Immobilization |
6.79 |
0.36 to 125.46 |
0.20 |
| Airway edema |
0.60 |
0.11 to 3.25 |
0.55 |
| Small mandible |
1.05 |
0.22 to 5.03 |
0.95 |
| Obesity |
1.39 |
0.29 to 6.77 |
0.68 |
| Large tongue |
3.31 |
0.64 to 17.09 |
0.15 |
| Short neck |
1.63 |
0.36 to 7.25 |
0.52 |
| Hemodynamic instability |
1.58 |
0.37 to 6.46 |
0.52 |
| Hypoxemia |
2.78 |
0.65 to 11.85 |
0.16 |
| Limited mouth opening |
2.74 |
0.45 to 16.65 |
0.27 |
| Secretions | 1.46 | 0.27 to 7.7 | 0.65 |
In this multivariate regression model controlling for the confounding variables, the odds ratio of first attempt success using VL was 7.67, compared to DL. See text for explanation.
*Reference = DL. **Reference = Male. DACs, Difficult airway characteristics; PGY, post-graduate year.