Application value of dexmedetomidine in anesthesia for elderly patients undergoing radical colon cancer surgery

Table 1 Comparison of demographic information between the two groups, n (%)

Group	n	Age (years)	BMI (kg/m2)	Sex		Years of education	ASA grade
				Male	Female		I	II	III
A	59	71.4 ± 4.3	21.99 ± 1.90	39 (66.10)	20 (33.90)	4.88 ± 1.25	15 (25.42)	28 (47.46)	16 (27.12)
B	58	70.8 ± 4.5	22.20 ± 2.14	32 (54.24)	26 (44.07)	5.04 ± 1.64	20 (34.48)	25 (43.1)	13 (22.41)
t/χ2		0.737	-0.562	1.464		-0.594	1.186
P value		0.462	0.576	0.264		0.554	0.553

ASA: American Society of Anesthesiologists; BMI: Body mass index.