Table 1.

VAS scores of pain intensity pre- and post-acupuncture (mm, Mean ± SE)

Group	N	Pre-acu	Post-acu	*P
SP6 acupuncture group	23	54.26 ± 2.312	31.96 ± 3.082	0.000
GB39 control group	26	55.42 ± 1.842	36.58 ± 3.358	0.000
Nonacupoint control group	11	55.09 ± 3.755	30.00 ± 4.143	0.000
□P		0.928	0.419

*P values are for within-group comparisons of the three groups.

^□P values are for between-group comparisons of the three groups. VAS indicates visual analogue scale.