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A cost-benefit analysis of hospital-wide medication reviews: a period prevalence study
Sarah Wilkes1, Rianne J Zaal2, Alan Abdulla2
1Department of Hospital Pharmacy, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands. s.wilkes@erasmusmc.nl.
Abstract:
Background For specific medical specialties it has been shown that clinical pharmacists can have a beneficial effect on the reduction of drug-related problems by performing medication reviews. However, little is known on the cost-benefit ratio of hospital-wide implementation of medication reviews. Aim To investigate the effect of conducting hospital-wide medication reviews on the detection and resolution of drug-related problems, and to calculate the cost-benefit ratio of the intervention. Method In this observational prospective period prevalence study, medication reviews were conducted during five consecutive working days in a Dutch university hospital. Patients admitted for more than 24 h were included. The cost-benefit ratio of conducting the medication reviews was calculated by dividing the total costs by the total savings. Results In 622 medication reviews, 709 potential drug-related problems (1.1 per patient) were detected. The most common advice was to stop medication (38.6%). Patients with a potentially drug-related problem were significantly older, had a higher median number of prescriptions, and the median number of days from admission to the time of medication reviews was longer. Conducting medication reviews showed a positive cost-benefit ratio of 9.7. Conclusions Hospital-wide medication reviews by clinical pharmacists have a positive cost-benefit ratio and contribute to the detection and the resolution of drug related problems (DRPs), mainly by reducing overtreatment.
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