Figure 2.

Percentage of full-text comments that contain 1 of the potential appraisal topics.^a

^aOf the 40 topics found, these are the 5 topics that were considered to be a potential appraisal topic. In order for a comment to be included, the topic of interest must have a minimum proportion of at least 0.05 amongst the entire distribution of topics that a comment consists of. For example, if the distribution of a comment has Topic 1 at 0.67, Topic 2 at 0.32, and Topic 3 at 0.01, then only Topic 1 and Topic 2 would meet the 0.05 threshold.