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Ease of device use
| Parameters | Group DL | Group KV | P |
|---|---|---|---|
| Ease of device insertion 1/2/3/4/5 | 40/04/03/03/0 | 35/10/02/03/0 | 0.375 |
| Ease of epiglottic visualization 1/2/3/4/5 | 38/08/02/02/0 | 43/04/03/0/0 | 0.406 |
| Ease of intubation 1/2/3/4/5 | 37/09/02/02/0 | 41/07/02/0/0 | 0.812 |
