Recently, the CTGPS team created a graphical representation of the data found on the Clinical Trials GPS website (which is derived from publically available data found at clinicaltrials.gov). It includes an analysis of the:
States with the most Clinical Trial Facilities
Cities with most Clinical Trial Facilities
Cities conducting the most Trials
Top Trials by Condition
One of the most interesting discoveries was that 6 of the top 10 conditions that trials are being conducted for are cancer related.