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Table 2 Comparison total endotracheal intubation (ETI) success depending on the Cormack-Lehane classification system

From: Comparison of videolaryngoscopy and direct laryngoscopy by German paramedics during out-of-hospital cardiopulmonary resuscitation; an observational prospective study

CL-Grade

I

II

III

IV

Total no. ETI successful

17 (89,5%)

37 (88,1%)

12 (52,2%)

2 (15,4%)

Total no. ETI unsuccessful

2 (10,5%)

5 (11,9%)

11 (47,8%)

11 (84,6%)

  1. point biserial correlation coefficient r.pb = 0,614, p < 0,0001