The total subjects in all Vanderbilt and Meharry production-level clinical research study databases currently numbers 17,959 and demonstrates active use for the REDCap system in the clinical domain. The number of registered end-users for all clinical, basic and operational projects is currently 722 unique individuals, including 363 users known through audit logs to have actively participated in data entry or export. An analysis of the number of registered users per project conveys information about the size and diversity of supported studies (median = 4, mean = 5.1, range = 1 to 77). An analysis of the number of projects per registered user conveys information about the diversity of supported users (median = 1, mean = 1.5, range = 1 to 14).
