Figure 4.

Scores reported by subjects for each pain type. (Top) Boxplots of score distributions for each type of pain experienced by patients in the last week before questionnaire compilation. (Bottom) Dendrogram of the different types of pain, generated using an average linkage agglomerative algorithm based on pairwise correlations between pain intensities. The distance used is one minus the correlation coefficient. The height of each node (vertical axis) is the distance value between the right and left sub-branch clusters. Light cont. = light contact; Occas. pain = occasional pain; Sample size n = 352.