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

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

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 ± 0.89a 0.04
Day 6 1.29 ± 1.14 0.93 ± 0.83 1.79 ± 1.19a 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  
  1. *There was no interaction between the changing trends in pain reduction scores and intervention factor of the three groups over time
  2. aCompared with the control group, the difference in cancer pain reduction scores was statistically significant, P<0.05