Table 1.

Demographic data from the L and H groups.

	L group (N = 63)	H group (N = 63)	P
Age (years)	47 ± 12	47 ± 9	0.95
Height (cm)	158 ± 7	158 ± 5	0.91
Weight (kg)	57 ± 10	58 ± 8	0.55
Smoking (pack × years)	0 ± 1	1 ± 4	0.64
Hx of motion sickness	4	7	0.34
Hx of PONV	1	1	1.00
Remifentanil (μg)	1013 ± 436	1894 ± 735	<0.001
Propofol (mg)	580 ± 294	428 ± 138	<0.001
Anaesthesia time (min)	104 ± 38	95 ± 35	0.15
Operation time (min)	69 ± 36	61 ± 33	0.23
Recovery time (min)	14 ± 6	13 ± 4	0.82

Values are expressed as number of patients or mean ± standard deviation.

L group: propofol-low dose remifentanil group; H group: propofol-high dose remifentanil group; Hx: history; PONV: postoperative nausea and vomiting.