Table 1 Baseline data

Age (y)

40 ± 13

38 ± 13

0.553

Male sex

11 (44%)

9 (36%)

0.564

Height (cm)

169 ± 8

166 ± 8

0.187

Body weight (kg)

64.4 ± 13.4

67.8 ± 14.2

0.392

Body mass index (kg/m²)

22.6 (20.2, 27.3)

22.5 (19.8, 26.6)

0.684

ASA classification

0.544

 I

16 (64%)

18 (72%)

 II

9 (36%)

7 (28%)

 Hemoglobin (g/L)

141.4 ± 12.0

139.9 ± 12.9

0.676

 Platelet (IU/L)

256 ± 56

269 ± 54

0.818

 Prothrombin time (s)

11.6 (11.2, 12.2)

11.4 (11.0, 11.8)

0.232

 Activated partial thromboplastin time (s)

29.3 (28.2, 31.7)

29.6 (27.6, 30.8)

0.676

 Thyromental distance (cm)

8.0 ± 0.8

7.7 ± 0.7

0.203

 Inter-incisor gap (cm)

4.5 ± 0.5

4.2 ± 0.6

0.055

 Modified Mallampati classification

0.225

  I

19 (76%)

15 (60%)

  II

6 (24%)

10 (40%)