Table 2.

Morphine consumption, mg

	Group A (n = 21)	Group E (n = 19)	p-value
0–24 h	7.5 (2.5–15)	18 (13–32)	0.05
24–48 h	5 (0–8.8)	15 (5–23)	0.03
0–48 h	11 (3.8–23)	33 (20–40)	0.01

Values are given as median with interquartile range in parentheses. Mann-Whitney U test.