Table 5. Data regarding difficulty of intubation.

Variable	Group C1 (n=26)	Group C2 (n=26)	Statistics	P
Cooper score	8.0 (7.0–8.3)	9.0 (9.0–9.0)	4.799†	<0.001***
Cormack-Lehane grade III/IV	16 (61.5)	3 (11.5)	14.016‡	<0.001***
Required assistance	16 (61.5)	4 (15.4)	11.700‡	0.001**
IDS score	3.0 (0.0–4.0)	1.0 (0.0–1.0)	2.001†	0.045*
Intubation time (s)	42.5 (33.0–50.0)	35.0 (29.8–40.0)	2.090†	0.037*

Data are presented as median (interquartile range) or n (%). Group C1, patients intubated with 1× ED₉₅ (0.05 mg/kg) of cisatracurium; Group C2, patients intubated with 2× ED₉₅ (0.1 mg/kg) of cisatracurium. ^†, Z value; ^‡, chi-square value; *, P<0.05; **, P<0.01; ***, P<0.001. IDS, intubation difficulty scale.