DATABASE, DATA STRUCTURES, AND DATA PROCESSING SYSTEMS FOR RECOMMENDING CLINICAL TRIAL SITES

Methods, systems, and apparatuses, including computer programs, for generating a recommendation of candidate clinical trial sites. In one aspect, the method can include receiving parameters of a clinical trial, filtering, based on the received parameters, database data to obtain a filtered set of location-prescription pairs, generating a location-prescription data structure for each location-prescription pair, determining a ranking score, for each location-prescription pair, based on one or more prioritization parameters, identifying a subset of locations based on the respective ranking scores, obtaining a portion of map data from a map database that corresponds to a geographic region that is defined based on the identified subset of locations, and generating rendering data that, when rendered by a user device, causes the user device to render a visualization that includes (i) the obtained portion of the map data and (ii) data identifying the subset of locations on a display of a computer device.