Fig. 2.

Percentage change in mean NPRS ‘average daily pain’ score following first treatment (a) from baseline to Weeks 2 and 8 and (b) from baseline to each assessment. The margin of equivalence for percentage change in mean NPRS score was set at ±16% (comparable to a one-point change on the NPRS scale). Error bars represent 95% confidence intervals. CRNP, cancer-related neuropathic pain; HIV-AN, HIV associated neuropathy; NBP, neuropathic back pain; NPRS, numeric pain rating scale; Other, other non-diabetic PNP; PHN, postherpetic neuralgia; PONP, post-operative and post-traumatic neuropathic pain; W, week