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Table 2 Variables comparing easy and difficult laryngoscopy. Data shown as Number(%) Mean ± SD or median (IQR)

From: Predicting difficult laryngoscopy in morbidly obese Thai patients by ultrasound measurement of distance from skin to epiglottis: a prospective observational study

Variables

Easy Laryngoscopy

(n = 75)

Difficult Laryngoscopy

(n = 13)

P value

bAge (years)

38 (29,48)

48 (46,57)

0.08

bBody mass index (kg/m2)

44.0 (39.8, 50.8)

41.8 (37.4, 45.9)

0.19

cSnoring

72 (96)

12 (92.3)

0.48

cPolysomnography

48 (64)

9 (69.2)

1

cApnea-Hyponea Index (AHI)

  

1

 mild

9 (18.8)

2 (22.2)

 

 moderate

10 (20.8)

2 (22.2)

 

 severe

29 (60.4)

5 (55.6)

 

cModified Mallampati score

  

0.46

 I

28 (37.3)

5 (38.5)

 

 II

24 (32)

6 (46.2)

 

 III

19 (25.3)

1 (7.7)

 

 IV

4 (5.3)

1 (7.7)

 

bThyromental distance (cm)

7.5 (7.0,8.0)

6.5 (6.3,8.0)

0.03

bSternomental distance (cm)

16.8 (152,180)

16.0 (145,163)

0.05

aInterincisor gap (cm)

4.6 (0.7)

4.5 (0.8)

0.59

aNeck circumference (cm)

42.8 (4.3)

41.9 (3.8)

0.51

cAbnormal upper teeth

12 (16)

1 (7.7)

0.68

cUpper lip bite test

  

0.60

 I

43 (57.3)

10 (76.9)

 

 II

29 (38.7)

3 (23.1)

 

 III

3 (4)

0 (0)

 

aDistance from skin to epiglottis (mm)

10.5 (2.9)

12.5 (3.3)

0.05

  1. a Data are presented as mean (Standard Deviation)
  2. b Data are presented as median (Interquartile range)
  3. c Data are presented as number (Percentage)