Table 4.
Evaluation of intubation conditions data of studied groups.
| Group | Parameter | N | Mean | 95% CI | Median | Minimum | Maximum | Q1 | Q3 | SD | SE | P value Levitan versus Lary-Flex | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Levitan | Intubation time | 40 | 8.57 | 7.72 | 9.43 | 8.00 | 5.00 | 18.00 | 7.00 | 9.50 | 2.66 | 0.42 | 0.000000 |
| Number of attempts | 40 | 1.08 | 0.99 | 1.16 | 1.00 | 1.00 | 2.00 | 1.00 | 1.00 | 0.27 | 0.04 | 0.705785 | |
| C/L 1 | 40 | 1.75 | 1.43 | 2.07 | 1.00 | 1.00 | 4.00 | 1.00 | 2.00 | 1.01 | 0.16 | 0.898564 | |
| C/L 2 | 40 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 0.00 | 0.00 | 1.000000 | |||
| K1 | 40 | 5.15 | 4.39 | 5.91 | 3.50 | 3.00 | 9.00 | 3.00 | 7.00 | 2.38 | 0.38 | 0.848359 | |
| K2 | 40 | 3.60 | 3.25 | 3.95 | 3.00 | 3.00 | 7.00 | 3.00 | 4.00 | 1.08 | 0.17 | 0.651942 | |
|
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| Lary-Flex | Intubation time | 39 | 5.79 | 5.40 | 6.19 | 6.00 | 3.00 | 8.00 | 5.00 | 7.00 | 1.22 | 0.20 | |
| Number of attempts | 39 | 1.03 | 0.97 | 1.08 | 1.00 | 1.00 | 2.00 | 1.00 | 1.00 | 0.16 | 0.03 | ||
| C/L I | 39 | 1.72 | 1.44 | 2.00 | 1.00 | 1.00 | 4.00 | 1.00 | 2.00 | 0.86 | 0.14 | ||
| C/L II | 39 | 1.00 | — | — | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 0.00 | 0.00 | ||
| K1 | 39 | 4.90 | 4.19 | 5.60 | 4.00 | 3.00 | 9.00 | 3.00 | 7.00 | 2.17 | 0.35 | ||
| K2 | 39 | 3.41 | 3.16 | 3.66 | 3.00 | 3.00 | 6.00 | 3.00 | 4.00 | 0.79 | 0.13 | ||
95% CI: confidence interval; Q1: quartile 1; Q3: quartile 3; SD: standard deviation; SE: standard error; C/L 1: evaluation of laryngoscopic view in Cormack-Lehane scale at beginning of intubation: for Levitan group using only laryngoscope, for Lary-Flex group using videolaryngoscope as standard laryngoscope; C/L 2: evaluation of laryngoscopic view using Levitan FPS or looping on monitor of Lary-Flex videolaryngoscope. Intubation conditions were evaluated using Krieg scale K1 in Levitan group using only laryngoscope, in Lary-Flex group using videolaryngoscope as standard laryngoscope and K2 using Levitan FPS and using whole videolaryngoscope set.