The history of the Drug Utilization Research Group in Europe.

Following the recommendations from a World Health Organization (WHO)/Euro symposium Consumption of drugs in 1969, a common classification system for drugs was developed, the Anatomical Therapeutic Chemical (ATC), and a technical unit of comparison, the Defined Daily Dose (DDD), as a comparative unit of drug use. This was found to be robust across therapeutic classifications, dosing forms and diverse populations. To maintain and develop the ATC/DDD system a WHO-Collaborating Centre was established in Oslo. As this was found to be of global interest the centre now reports to the WHO headquarters in Geneva. An informal WHO Drug Utilization Research Group (WHO-DURG), later the EuroDURG, has by now met 28 times in Europe. Since 1994 in Stockholm all these meetings have been with ISPE (International Society for Pharmacoepidemiology) when meeting in Europe. The main focus was initially to improve drug utilization through cross-national drug utilization studies based on the ATC/DDD methodology as they revealed large differences between and within countries that could not easily be explained by morbidity differences alone. These observed differences have led to the expansion of the area to include social, economic and qualitative methods with a more generalized public health focus. One of the most recent contributions was the development of drug use quality indicators.

A primer on drug utilization review.

Many health care organizations evaluate drug utilization to improve the quality of patient care, reduce pharmaceutical expenditures, and enhance therapeutic outcomes. The Drug Regimen Review, instituted in 1974 as part of a quality assurance program for the care of Medicaid recipients, has reduced medication use, medication errors, adverse drug reactions, and drug-drug interactions. The Drug Usage Evaluation, a sophisticated analysis of drugs, their uses, and their contributions to various patient outcomes, is performed by member institutions of the Joint Commission on Accreditation of Healthcare Organizations. The 1990 Omnibus Budget Reconciliation Act (OBRA '90) established the Drug Utilization Review (DUR), which was implemented by state Medicaid outpatient prescription programs in 1993. Pharmacists performing DURs must review past patterns of drug misuse, monitor current therapy, and offer patient counseling. Drug utilization reviews have reduced inappropriate drug use and decreased drug costs.