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Cluster separation projected onto 2-dimensional space. Scatter plot of the 2 quantitative sensory testing (QST) parameters that gave the best cluster separation: mechanical pain sensitivity (MPS) plotted against warm detection threshold (WDT). Blue dots: cluster 1 “sensory loss” (n = 193); red dots: cluster 2 “thermal hyperalgesia” (n = 103); and yellow dots: cluster 3 “mechanical hyperalgesia” (n = 137). Circles indicate centroids of each cluster.
