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Pharmacoepidemiology and military medical automation: opportunity for excellence.

Fielding of the Composite Health Care System (CHCS) brings an unparalleled opportunity for medical research. This sophisticated automated medical record system promises pharmacoepidemiologic research of a quality and quantity never before possible. Pharmacoepidemiology provides answers about the validity of beneficial and adverse drug events and aids in individualizing drug therapy. When CHCS eventually encompasses an estimated 9.1 million patients at 166 military hospitals and 588 clinics around the world, it will provide a database capable of supporting sophisticated automated research. In addition to the unprecedented size of this resource, advantages of pharmacoepidemiology performed with the CHCS database include integration of inpatient and outpatient care records, the completeness of prescription and medical records, and the wide socioeconomic spectrum covered in a defined population. Limitations and potential biases of such a database include separate drug formularies at each medical treatment facility, only limited information about nonprescription drug use and single-dose drug orders in clinics, and the mobility of military service members and their families. Pharmacoepidemiology is a tool that will benefit individual members of the military family, as well as advancing the sciences of pharmacy and medicine. Using the CHCS database for this form of research is in the best tradition of military medical research.