FIGURE 3.

Weekly mean pain levels (as assessed by VAS) from baseline week (W) zero to W12 in the two experimental groups for the following question: “considering your chronic pain that motivated the treatment – how intense was your worst pain during the last 24 h?”. The error bars indicate the standard error of the mean (SEM). Asterisks (^∗) positioned above the bars indicate significant differences (P < 0.01) at those time points between the sham and the EIMS groups. All comparisons were performed by a mixed analysis of variance (ANOVA) model, followed by the Bonferroni correction for post hoc multiple comparisons.