Figure 6.

pyLDAvis using Jensen-Shannon divergence and principal coordinate analysis. The intertopic distance map shows, across two principal components serving as x- and y-axes, several regions of overlapping topics. For instance, many topics related to pain outcomes are represented in the upper right quadrant, whereas topics pertaining to nonclinical research are predominantly found in the upper left quadrant. The left lower quadrant of this distance map focuses on perioperative topics, showing overlap in conditions related to bone, joint, and muscle, with coronary-related topics serving as a more extreme outlier in this quadrant. The lower right quadrant appears focused on outpatient, nonsurgical pain conditions including headache and abdominal pain that also suggest areas of poorer specificity.