Table 2 Predictive values of independent predictors of difficult intubation and difficult laryngoscopy (n = 2068)
Variable (Positive threshold value) | Odds ratio (95% CI) | Sensitivity (95% CI) | Specificity (95% CI) |
|---|---|---|---|
For difficult intubation | |||
Modified Mallampati test (> 2) | 4.24 (2.46–7.32) | 0.61 (0.47–0.74) | 0.73 (0.71–0.75) |
TMJ range of motion (≤ 11 mm) | 21.69 (11.32–41.55) | 0.79 (0.66–0.88) | 0.86 (0.84–0.87) |
Expected glottal visibility (≤-4 mm) | 138.74 (58.26-330.39) | 0.89 (0.78–0.96) | 0.94 (0.93–0.95) |
For difficult laryngoscopy | |||
Modified Mallampati test > 2 | 2.77 (1.92-3.00) | 0.50 (0.41–0.59) | 0.74 (0.72–0.76) |
TMJ range of motion (≤ 11 mm) | 12.33 (8.32–18.27) | 0.65 (0.56–0.73) | 0.87 (0.85–0.88) |
Expected glottal visibility (≤-1 mm) | 24.43 (16.11–37.04) | 0.70 (0.61–0.78) | 0.91 (0.90–0.93) |