Efficacy and Safety of Remimazolam Besylate Combined with Alfentanil in Painless Gastroscopy: A Randomized, Single-Blind, Parallel Controlled Study

Table 1

Patient demographic characteristics.

	Research group	Control group
Patients, n	457	457
Male/female	211/246	209/248
Mean age,year(±SD)	52.69 ± 13.12	52.56 ± 12.69
Mean BMI(±SD)	23.97 ± 3.40	23.84 ± 3.50
ASA classification
I	0	0
II	457	457
Apfel	1.38 ± 0.75	1.40 ± 0.75