Table 2.

First-pass intubation success rates of four laryngoscopes

	All laryngoscopes	Pentax-Airway Scope	King VISION	McGrath Mac	Macintosh	P value
All operators, n	287	82	59	82	64
First-pass intubation success	199 (69)	64 (78)*	34 (58)	64 (78)†	37 (58)	0.004
Non-expert operators	156	46	32	37	41
First-pass intubation success	104 (67)	40 (87)‡	16 (50)	29 (78)§	19 (46)	0.00004
Expert operators	131	36	27	45	23
First-pass intubation success	95 (73）	24 (67)	18 (67)	35 (78)	18 (78)	0.556

Values are numbers (%) of observations; post hoc analyses were performed using Tukey-Kramer test for paired comparisons of four laryngoscopes.

*vs King VISION p=0.043; vs Macintosh p=0.039.

†vs King VISION p=0.043; vs Macintosh p=0.039.

‡vs King VISION p=0.002; vs Macintosh p<0.001.

§vs King VISION p=0.043; vs Macintosh p=0.009.