Grade of mask ventilation preparalysis (p value)

Grade of mask ventilation postparalysis (p  value)

 Body mass index

0.061

0.078

age

0.011

0.014

Interincisor gap

0.007

0.0003

Neck circumferance

0.02

0.002

Thyromental distance

0.064

0.238

 Sternomental distance

0.01

0.009

Ratio of height to thyomental distance

0.414

0.009

 Mallampatti class

 0.800

 0.326

 Best oropharyngeal view

0.361

0.197