Acupuncture for Frequent Migraine: A Randomized, Patient/Assessor Blinded, Controlled Trial with One-Year Follow-Up

Figure 4

The percentage change of PPTs at 11 sites in the two groups after the treatment (mean and SE, RA, , and SA, ). indicates that at the end of treatment, the mean percentage changes in PPTs of sites Numbers 7 and 8 in RA were significantly larger than those in SA.