Supplementary Figure 1: Bar plots derived from the mean ratings of the single items of Beck’s depres- sion inventory (BDI). The top panel shows the mean ratings of BDI items, separately for the “non-per- sistent pain” (bars directed upwards) and “persistent pain” (bars directed downwards) patient groups.
The bottom panel shows the ratio of the mean ratings between the two patient groups. Here, the dotted line indicates a ratio of 1, i.e., same ratings in both groups. Bars > 1 indicate that the respec - tive BDI item was stronger present in the persistent pain group, whereas bars < 1 indicate that the item was weaker present in the “persistent pain” group. The figure has been created using the R sof - ware package (version 3.4.1 for Linux; http://CRAN.R-project.org/).