Fig. 2

Mean Differences of Visual Analog Scale Pain Scores, Perceived Pain Reduction and Opioid Use based on Type of Spinal Cord Stimulator. Blue stars note significant difference for HF-SCS at that time point compared to baseline. Yellow stars note significant differences for LF-SCS at that time point compared to baseline. Black stars note significant differences between HF-SCS and LF-SCS at that time point. Confidence intervals which cross the dotted red line are considered nonsignificant. a Mean differences and 95% confidence intervals in visual analog scale pain scores by type of stimulator at baseline, post-implantation, 3 months after implant, 6 months after implant and 12 months after implant in comparison to baseline. b Mean differences and 95% confidence intervals in perceived pain reduction by type of stimulator at baseline, post-implantation, 3 months after implant, 6 months after implant and 12 months after implant in comparison to baseline. c Mean differences and 95% confidence intervals in opioid use using morphine miliequivalents by type of stimulator at baseline, post-implantation, 3 months after implant, 6 months after implant and 12 months after implant in comparison to baseline