Table 2.

Postoperative morphine consumption

Variablea	Placebo (n=11)	Active (n=10)	P-valueb
Total pain medication at hour 0 (mg)	0.0 (0.0, 0.0, 1.7, 6.7)	0.0 (0.0, 0.0, 0.0, 0.0)	0.094
Total pain medication at hour 2 (mg)	6.7 (0.0, 2.6, 10.0, 12.0)	2.0 (0.0, 0.0, 7.2, 20.0)	0.38
Total pain medication at hour 6 (mg)	10.7 (0.0, 3.3, 14.6, 28.6)	6.6 (0, 2.2, 9.9, 34.8)	0.50
Total pain medication at hour 12 (mg)	8.0 (0.0, 5.3, 14.7, 28.0)	8.8 (0.0, 4.1, 10.0, 20.0)	0.83
Total pain medication at hour 24 (mg)	12.7 (0.0, 6.6, 37.0, 55.5)	9.0 (0.0, 3.3, 10.0, 97.3)	0.20
Total 24-hour opiate consumption (mg)	48.7 (14.0, 24.4, 73.3, 84.6)	26.6 (11.7, 16.5, 36.3, 151.3)	0.13
Minutes from end of surgery to first PCA morphine request	50 (16, 36, 90, 166)	59 (30, 48, 115, 455)	0.37c

Notes:

^aContinuous variables are reported with median (minimum, 25th percentile, 75th percentile, maximum)

^bP-value given based on Wilcoxon rank sum test

^cP-value given based on log rank test.

Abbreviation: PCA, patient-controlled morphine analgesia.