Enhancing an existing clinical information system to improve study recruitment and census gathering efficiency.

Information technology can improve healthcare efficiency. We developed and implemented a simple and inexpensive tool, the "Automated Case Finding and Alerting System" (ACAS), using data from an existing clinical information system to facilitate identification of potentially eligible patients for clinical trials and patient encounters for billing purposes. We validated the ACAS by calculating the level of agreement in patient identification with data generated from manual identification methods.