Table 2 Adequate oral endotracheal tube sizes according to sub groups

Gender

 Female (n = 133)

107 (80.5%)

6 (4.5%)

20 (15%)

p = 0.467

 Male (n = 210)

176 (83.8%)

4 (1.9%)

30 (14.3%)

Age in years

 0–1 (n = 33)

14 (42.4%)

0 (0%)

19 (57.6%)

p < 0.001

 1–2 (n = 37)

30 (81.1%)

0 (0%)

7 (18.9%)

 2–4 (n = 56)

49 (87.5%)

0 (0%)

7 (12.5%)

 4–6 (n = 37)

32 (86.5%)

0 (0%)

5 (13.5%)

 6–8 (n = 32)

27 (84.4%)

1 (3.1%)

4 (12.5%)

 8–10 (n = 30)

27 (90%)

2 (6.7%)

1 (3.3%)

 10–12 (n = 21)

14 (66.7%)

5 (23.8%)

2 (9.5%)

 12–17 (n = 97)

90 (92.8%)

2 (2.1%)

5 (5.1%)

Mission type

 Primary (n = 195)

165 (84.6%)

7 (3.6%)

23 (11.8%)

p = 0.253

 Secondary (n = 148)

118 (79.7%)

3 (2.1%)

27 (18.2%)

Medical indication

 Trauma (n = 194)

166 (85.6%)

6 (3.1%)

22 (11.3%)

p = 0.114

 Non-trauma (n = 149)

117 (78.5%)

4 (2.7%)

28 (18.8%)

Resuscitation

 Yes (n = 72)

53 (73.6%)

5 (6.9%)

14 (19.4%)

p = 0.035

 No (n = 271)

230 (84.9%)

5 (1.8%)

36 (13.3%)