A pilot randomized controlled trial of acupuncture at the Si Guan Xue for cancer pain

Table 6 Changes of NRS reduction in the three study arms \( \left(\overline{x}\pm SD\right) \)

Time	Arm 1 (n = 14)	Control arm (n = 14)	Arm 2 (n = 14)	P-value
Day 1	1.93 ± 1.21	1.36 ± 1.15	1.86 ± 1.03	0.36
Day 2	1.93 ± 1.14	1.14 ± 0.77	1.57 ± 1.28	0.17
Day 3	1.93 ± 1.14	1.07 ± 1.07	1.64 ± 1.22	0.14
Day 4	1.43 ± 1.16	1.21 ± 0.97	1.43 ± 1.02	0.83
Day 5	1.36 ± 1.01	0.86 ± 0.86	1.79 ± 0.89^a	0.04
Day 6	1.29 ± 1.14	0.93 ± 0.83	1.79 ± 1.19^a	0.11
Day 7	1.36 ± 1.08	1.00 ± 1.04	1.29 ± 1.07	0.65
Main effect of time (P-value)*	>0.05

*There was no interaction between the changing trends in pain reduction scores and intervention factor of the three groups over time
^aCompared with the control group, the difference in cancer pain reduction scores was statistically significant, P<0.05

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