Accepted Monday Aug 31, 2009
In we made several errors which we correct here. First, we misidentified the distance metric used in that paper. More importantly, the distance metric that we used was inappropriate to the coding scheme we developed for our data. Finally, we were not rigorous in how we defined the groups we identified and have since refined how we describe clustered groups. To correct for these issues, we apply a more appropriate distance measure, the Jaccard distance, to our original coding scheme, check the new results against the old using a pivot table comparison, and describe the new results found.