Table 1.

Demographic Variables of Volunteers Who Underwent Painless Gastroscopy

Variables	Esketamine Group	Racemic Ketamine Group
Total number	16	16
Sex (%)
Male	8 (50.00%)	8 (50.00%)
Female	8 (50.00%)	8 (50.00%)
Age, years	32.00±6.19	40.00±8.91
Height, m	1.65±0.09	1.65±0.11
Weight, kg	59.55±9.73	63.66±13.86
BMI, kg/m2	21.63±1.96	23.05±2.69
ASA grade	I–II	I–II
Modified Mallampati Score	I	I–II

Notes: Data are the mean ± SD, except sex (male/female), which is the %.

Abbreviations: BMI, body mass index; SD, standard deviation.