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Table 2 Comparison of efficacy of different tests as per the ease of laryngoscopy (CL grading)

From: Evaluation of thyromental height test as a single anatomical measure for prediction of difficult laryngoscopy: a prospective observational study

Test

 

n (%)

CL Grading

Significance

Difficult

Easy

 

TMHT

Difficult

22 (14.66%)

20 (90.90%)

2 (9.09%)

0.0001

Easy

128 (85.33%)

6 (4.68%)

122 (95.31%)

MMPG

Difficult

18 (12%)

12(66.66%)

6 (33.33%)

0.0001

Easy

132(88%)

14(10.60%)

118(89.40%)

ULBT

Difficult

12(8%)

10(83.33%)

2(16.66%)

0.0001

Easy

138 (92%)

16(11.60%)

122(88.4%)

IIG

Difficult

12(8%)

9(75%)

3 (25%)

0.0001

Easy

138 (92%)

17(12.3)

121(87.6%)

TMD

Difficult

18(12%)

7(38.88%)

11(61.11%)

0.01

Easy

132(88%)

19(14.39%)

113(85.6%)

SMD

Difficult

40(26.66%)

10(25%)

30(75%)

0.135

Easy

110(73.33%)

16(14.54%)

94(85.45%)

  1. TMHT Thyromental height test, MMPG Modified Mallampati test, ULBT Upper lip bite test, IIG Inter incisior gap, TMD Thyromental distance, SMD Sternomental distance, CL Cormack-Lehane