Table 1.

Comparison of general data among the 3 groups (n = 30, ±s).

General conditions	Group P	Group E	Group PE	P-value
ASA grade (I/II)	13/17	12/18	15/15	.730
Age (years)	57.5 ± 5.2	57.3 ± 7.3	57.7 ± 6.1	.970
Gender (male/female)	12/18	14/16	13/17	.873
Height (cm)	161.7 ± 7.3	161.8 ± 8.5	163.3 ± 6.1	.732
Body weight (kg)	60.1 ± 8.5	60.3 ± 7.6	61.0 ± 7.6	.900
Operation time (min)	206.3 ± 14.0	204.5 ± 15.8	205.5 ± 14.2	.890
Amount of bleeding (mL)	196.7 ± 39.2	195.0 ± 41.1	188.3 ± 38.7	.714
Years of education (years)	6.7 ± 1.3	6.5 ± 1.1	6.6 ± 1.2	.817
Vasoactive drug use (yes/no)	12/18	4/26	6/24	.044
Type of surgery (total gastrectomy/distal subtotal gastrectomy/proximal subtotal gastrectomy)	8/12/10	9/13/8	7/14/9	.960

Group P, the propofol group; group E, the etomidate group; group PE, the etomidate–propofol mixture group.

ASA = American Society of Anesthesiologist.