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Mean percentage change from baseline in numeric pain rating scale (NPRS). Error bars represent 1 standard error of the mean. Sample sizes represent observed cases with an NPRS score at each assessment [10]. Lower scores indicate reduction in pain. Figure adapted with permission from: Deer T, Rauck RL, Kim P, et al. Effectiveness and safety of intrathecal ziconotide: Interim analysis of the Patient Registry of Intrathecal Ziconotide Management (PRIZM). Pain Pract 2018;18(2):230–8 [10].
