Skip to main content
. 2023 Apr 1;51(2):121–127. doi: 10.5152/TJAR.2023.22213

Table 4.

Correlation Between Adult BMI and Modified Mallampati Classification, TMD Measurement, ULBT, and CL Classification Values

BMI
<18.5 (Underweight) 18.5-24.9 (Normal Weight) 25-29.9 (Overweight) 30-34.9 (Class 1 Obesity) 35-39.9 (Class 2 Obesity) ≥ 40 (Class 3 Obesity) P
n (%) n (%) n (%) n (%) n (%) n (%)
Modified Mallampati Class 1 1 (4.0) 12 (48.0) 7 (28.0) 2 (8.0) 1 (4.0 ) 2 (8.0) .001
Class 2 4 (3.8) 48 (45.7) 32 (30.5) 17 (16.2) 4 (3.8) 0 (0)
Class 3 6 (3.9) 32 (20.9) 55 (35.9) 38 (24.8) 15 (9.8) 7 (4.6)
Class 4 19 (5.9) 62 (30.4) 58 (30.0) 46 (20.1) 24 (8.7) 16 (4.9)
TMD <6 cm 9 (26.5) 43 (25.6) 55 (33.7) 46 (43.8) 17 (37.0) 21 (80.8) <.001
≥6 cm 25 (73.5) 125 (74.4) 108 (66.3) 59 (56.3) 29 (63.0) 5 (19.2)
ULBT Class 1 14 (41.2) 97 (57.7) 108 (66.3) 75 (71.4) 37 (80.4) 20 (76.9) <.001
Class 2 18 (52.9) 45 (26.8) 46 (28.2) 20 (19.0) 9 (19.6) 6 (23.1)
Class 3 2 (5.9) 26 (15.5) 9 (5.5) 10 (9.5) 0 (0) 0 (0)
CL Class 1 0 (0) 4 (57.1) 1 (14.3) 0 (0) 2 (28.6) 0 (0) <.001
Class 2 3 (11.1) 7 (25.9) 5 (18.5) 5 (18.5) 1 (3.7) 6 (22.2)
Class 3 3 (2.9) 26 (25.0) 35 (33.7) 22 (21.2) 12 (11.5) 6 (5.8)
Class 4 8 (3.0) 80 (30.0) 85 (31.8) 58 (21.7) 26 (9.7) 10 (3.7)

BMI, body mass index; CL, Cormack–Lehane classification; TMD, thyromental distance; ULBT, upper lip bite test.