Table 2.

Main outcomes in the two study groups

Outcome criteria	Acupuncture, n=54	Morphine, n=61	P
VAS at admission, median (IQR)	83 (77–92)	85 (75–96)	0.5
VAS at 60 minutes, median (IQR)	10 (6–15)	22 (14–26)	0.002
Success rate* at 60 minutes, n (%)	47 (87)	51 (83)	0.6
Resolution time** (minutes), mean ± SD	14.5±7.8	28.2±12.4	<0.001

Notes:

^*Decrease in admission VAS of at least 50%;

^**time to obtain decrease in VAS of at least 50%.

Abbreviation: IQR, interquartile range; VAS, visual analog scale.