Clinical trial management and quality assurance is a complex activity that, when manually executed, is prone to errors and delays, and organizations involved in the conduct of clinical drug trials must rely on database systems to ensure adequate data integrity and timely reporting. We report the design and implementation of an integrated computer system for the management and control of multiple phase II to IV clinical drug trials, and for automated generation of monitoring and statistical analysis reports that are fully compliant with international guidelines. This Windows-based system incorporates a number of third-party software tools and applications, and its major components are COATI (Control, Assessment and Tracking of Therapeutic Investigations), a client-server database application; DART (Data Analysis and Reporting Tool) for automated data abstraction and reporting; and PANDA (Data Analysis Package) for automated statistical analysis. The system is in production for two years and was used in 15 clinical trials in a diversity of medical conditions and study designs.