Table 2.
Fit factor of N95 or a higher mask in the baseline scenario and intubation scenario (n = 24).
| Types of N95 or a higher mask | ||||||||
|---|---|---|---|---|---|---|---|---|
| Cup type | Fold type | Valve type | P value | Cup type versus fold type | Cup type versus valve type | Fold type versus valve type | ||
| (n = 24) | (n = 24) | (n = 24) | ||||||
| Baseline phase | Fit factor | 200 (200-200) | 200 (200-200) | 200 (179–200) | 0.107 | 0.015 | 0.225 | 0.009 |
| Adequate protection∗ (percent) | 100 (78.61–100) | 100 (100-100) | 100 (76.1–100) | 0.081 | 0.031 | 0.266 | 0.104 | |
| Intubation phase | Fit factor | 200 (102.75–200) | 200 (200-200) | 142.5 (63.5–200) | <0.001 | 0.001 | 0.048 | <0.001 |
| Adequate protection∗ (percent) | 74.16 (36.1–98.91) | 100 (91.61–100) | 62.5 (8.13–100) | 0.011 | <0.001 | 0.118 | <0.001 | |
| Intubation time | Intubation time† (seconds) | 33.24 (2.58) | 28.69 (1.55) | 29.88 (1.63) | 0.247 | 0.324 | 0.70 | 1.00 |
| Intubation success rate | Intubation success rate (percent) | 24 (100) | 24 (100) | 24 (100) | ||||
| Preference | Preference | 2 (8.3) | 10 (41.7) | 12 (50.0) | ||||
Categorical variables are given as numbers (percentage). Continuous variables with a normal distribution are given as mean (SD). The nonparametric variables are given as median (IQR). Cup type: 3M 1860. Fold type: 3M 1870. Valve type: 3M 9332. ∗Success rate is the percentage of fit factor greater than or equal to 100. †Intubation time is the time from inserting the blade into the mouth to the first ventilation.