Diagnostic Efficacy and Clinical Value of Ultrasonography in Difficult Airway Assessment: Based on a Prospective Cohort Study

Table 1

Comparison of the general conditions of patients in the four groups (±s).

Index	DL; (n = 26)	NDL; (n = 174)	t/χ^2		DI; (n = 17)	NDI; (n = 183)	t/χ^2
Gender (male/female)	15/11	89/85	0.388	>0.05	11/6	93/90	0.680	>0.05
Age (years)	50.15 ± 11.24	47.13 ± 14.41	1.022	>0.05	49.77 ± 12.43	47.31 ± 14.42	0.762	>>0.05
Height (cm)	168.67 ± 6.78	168.33 ± 7.25	0.225	>0.05	170.08 ± 6.92	168.62 ± 7.61	0.923	>0.05
Body weight (kg)	69.68 ± 11.94	63.35 ± 9.45	3.072	˂0.01	71.42 ± 10.12	63.75 ± 9.07	3.303	˂0.01
BMI (kg/m^2)	24.36 ± 3.41	22.27 ± 2.36	3.949	˂0.01	24.57 ± 2.37	22.35 ± 2.58	3.415	˂0.01