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Table 3 Features that have a continuous value

From: Unravelling intubation challenges: a machine learning approach incorporating multiple predictive parameters

Features

Feature importance

Frequency N (%)

Description

Class 1

Class 2

Class 3

Class 4

Loose front teeth

0.018674

113(18)

   

Class 1: present loose tooth/teeth.

MASK Ventilation Score

0.034665

372(60)

132(22)

112(18)

 

Grade I: easy to ventilate, Grade II: requires nasopharyngeal or oral airway to ventilate, Grade III: difficult to ventilate or requires two providers, Grade IV: unable to ventilate using all the above maneuvers. Grades III and IV are defined as difficult mask ventilation)

Mallampati Score

0.030622

190(31)

220(35)

190(31)

22(3)

This classification system comprises four classes. To assess it, the patient is requested to open their mouth and protrude their tongue silently, allowing for observation of the pharyngeal structures. The classification is as follows: 1: Soft palate, pharynx, entire uvula, and pillars visible, 2: Soft palate, pharynx, and part of the uvula visible, 3: Soft palate and base of the uvula visible, 4: Only the hard palate visible.

Snoring

0.027833

165(26)

   

History of snoring during sleep declared by the patient