Table 3.

Duration of analgesia, total amount of desfluran consumption, the cost of desflurane in each group

	Group L	Group B	Group C	p value
	(n = 20)	(n = 20)	(n = 20)
Duration of analgesia (min)	962.2 ± 170.9*,** (665–1245)	1181.5 ± 198.2*(748–1545)	122.6 ± 52.9 (58–229)	<0.000
Desflurane consumed (mL)	152.4 ± 64.2** (40–470)	92.4 ± 43.7* (37.33-186.66)	175.1 ± 94.7 (80–390)	0.002
Volume of Desflurane per time unit(ml)	1.23 ± 0.23** (0.53-1.57)	1.05 ± 0.25* (0.70-1.62)	1.63 ± 0.31 (1.14-2.31)	0.001

*p < 0.05: compared with Group C

**p < 0.05: compared with Group B