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. Author manuscript; available in PMC: 2011 Mar 1.
Published in final edited form as: J Manipulative Physiol Ther. 2010 Mar–Apr;33(3):193–200. doi: 10.1016/j.jmpt.2010.01.010

Figure 1.

Figure 1

Baseline and 4-week unadjusted mean Numeric Pain Rating Scores (NPRS) by cohort. Regression analysis revealed that a significant difference in the mean adjusted 4-week pain scores remained after controlling for baseline pain, cohort, and expectation.