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. Author manuscript; available in PMC: 2015 Aug 11.
Published in final edited form as: Ann Emerg Med. 2012 May 5;60(6):739–748. doi: 10.1016/j.annemergmed.2012.03.031

Table 5.

Cormack-Lehane views.

CL Grade C-MAC, % (n=125)* 95% CI† DL, % (n=495) 95% CI†
I 79.2 (99) 71.0–85.9 48.3 (239) 43.8–52.8
II 14.4 (18) 8.8–21.8 34.6 (171) 30.4–38.9
III 4.8 (6) 1.8–10.2 12.9 (64) 10.1–16.2
IV 1.6 (2) 0.2–5.7 4.2 (21) 2.6–6.4

CL, Cormack-Lehane.

*

When C-MAC was used only as a video laryngoscope device.

†

95% CIs calculated using “exact” method.