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Table 3 Intubation characteristics; intubation success

From: Improved success rates using videolaryngoscopy in unexperienced users: a randomized crossover study in airway manikins

 

Intubation success—abort after 30 s**

Intubation success—abort after 60 s

Frequency

Percent

p-value*

Frequency

Percent

p-value*

Abort after 60 s

 Manikin A

  Direct laryngoscopy

21

100

 

21

100

 

  Storz cMac

19

90

***

21

100

***

  Storz dBlade

17

81.0

***

19

90.5

***

  Ambu King Vision

18

85.7

***

20

95.2

***

 Manikin B

  Direct laryngoscopy

19

86.4

 

22

100

 

  Storz cMac

20

90.9

1.000

21

95.5

***

  Storz dBlade

21

95.5

.500

21

95.5

***

  Ambu King Vision

18

85.7

1.000

20

95.2

***

 Manikin C

  Direct laryngoscopy

16

76.2

 

19

90.5

 

  Storz cMac

16

76.2

1.000

20

95.2

1.000

  Storz dBlade

20

95.2

.125

20

95.2

1.000

  Ambu King Vision

16

84.2

1.000

16

84.2

1.000

  1. * Level of significance compared to direct laryngoscopy at the same manikin. McNemar test
  2. ** Post hoc analysis of a theoretical abort after 30 s
  3. *** Processing of a McNemar test was not feasible due to constant values in direct laryngoscopy