• D H Smith, D B Christensen, A Stergachis, and G Holmes.
• Department of Pharmacy, University of Washington, Seattle, USA.
• Med Care. 1998 Jul 1; 36 (7): 1013-21.

ObjectivesDrug use review is used by both the public and private sector to influence prescribing behavior and patient drug use. Past interventions mailed to prescribers have had mixed results. The objective was to evaluate the effect of a one-time, mailed intervention on subsequent use of sedative hypnotic medication.MethodsAn experimental design was used. The intervention contained guidelines for the use of sedative hypnotics, a prescriber profile detailing sedative hypnotic prescribing, and a patient profile. Clustering of patients and their shared prescribers was done to avoid contamination bias and statistical problems associated with a lack of independence of observations. Subjects were 189 Washington State Medicaid recipients who had received at least one tablet per day of a sedative hypnotic medication for 1 year and their prescribing physicians or (when information about the physician was lacking) the dispensing pharmacy.ResultsA significant reduction in the use of targeted sedative hypnotic medications was measured in the intervention group (-27.6%) versus the control group (-8.5%). In the intervention group, 9.4% of patients began a new prescription for a benzodiazepine not targeted by the drug use review, whereas no control patients had new use of nontarget benzodiazepines.ConclusionsThe intervention achieved a statistically significant decrease in targeted drug use, and the amount of reduction is likely to have decreased the risk of fractures associated with benzodiazepine use. This study adds to the recent evidence that mailed drug use review interventions can have a desirable impact on patient drug use.

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