Table 8.

Mean changes at Week 24, presented with 95% Confidence Intervals and effect size of change.

Outcome Measure	Mean Improvement (95% CI)	Cohen’s d Effect Size
Revised Fibromyalgia Impact Questionnaire Week 6/Week 24 Baseline/Week 24	−10.41 (8.98 to 11.85) * 14.02 (12.55 to 15.49) **	0.57 0.94
Patient Global Impression of Change Week 6/Week 24	1.68 (1.47 to 1.9)	0.94

* p = 0.23, ** p = 0.001.