Fig. 2.

Chronic pain often has a neuropathic character. (A) Distribution of pain across the body. Dermatomes are shaded according to proportion of respondents who reported pain in this area. (B,C) SFNSL (B) and painDETECT (C) scores are significantly higher amongst those respondents who reported chronic pain (t-test, B; Wilcoxon test, C). Grey shaded area indicates possible neuropathic pain; red shaded area indicates likely neuropathic pain. Box-and-whisker plots depict median, interquartile range (box) and 1.5IQR below and above the first and third quartiles respectively (whiskers). Datapoints indicate individual responses. (D) SF12v2 quality of life compound (left) and subdomain (right) measures presented as t-scores compared to the general population, with 50 being the norm and every point equivalent to 0.1 standard deviation (sd) from the norm. White dots are the mean of the respondents, with the error bars representing the 95% confidence interval around the mean calculated through bootstrapping of non-parametric values. Datapoints indicate individual responses. (E) Only the bodily pain subdomain score is significantly different between respondents with (white) or without (red) chronic pain (Wilcoxon test).