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Modelling drug-related morbidity in Sweden using an expert panel of pharmacists
Nordic School Public Health NHV, Sweden .
Nordic School Public Health NHV, Sweden .
Linköping University, Department of Medical and Health Sciences, Pharmacology. Linköping University, Faculty of Health Sciences.
Nordic School Public Health NHV, Sweden .
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2012 (English)In: INTERNATIONAL JOURNAL OF CLINICAL PHARMACY, ISSN 2210-7703, Vol. 34, no 4, 538-546 p.Article in journal (Refereed) Published
Abstract [en]

Background Drug-related morbidity (DRM) is common and to some extent preventable, and associated with considerable costs in patients attending hospital. In outpatients and in the general public corresponding data are limited, but pharmacists expert opinion has suggested high rates of DRM also in US ambulatory care. It is unknown if the results are applicable in Sweden today. Objective To estimate the proportions of patients with DRM and preventable DRM and the cost-of-illness (COI) of DRM in Sweden based on pharmacists expert opinion. Setting Swedish healthcare. Method The study applied a conceptual model of DRM based on a decision tree. An expert panel of pharmacists determined the probabilities of therapeutic outcomes of medication therapy. The COI analysis included direct costs from the healthcare perspective. Sensitivity analyses were performed for variations in probabilities and pathway costs. Main outcome measure DRM included new medical problems (adverse drug reactions, drug dependence and intoxications) and therapeutic failures (insufficient effects of medicines and morbidity due to untreated indication). Results The expert panel estimated that 61 +/- A 14 % (mean +/- A SD) of all patients attending healthcare suffered from DRM, of which 29 +/- A 8 % suffered from new medical problems, 18 +/- A 6 % from therapeutic failures, and 15 +/- A 7 % from a combination of both. The DRM was considered preventable in 45 +/- A 15 % of the patients with DRM. The estimated COI was EUR 997 per patient attending healthcare, corresponding to an annual cost of EUR 6,600 million to the Swedish healthcare system. The COI ranged from EUR 490 to EUR 1,314 when varying the participants probabilities of DRM and clinical outcomes from the first to the third quartile. Of the pathway costs, the COI was most sensitive to variation in the cost of prolonged hospital stay (COI range EUR 953-1,306). Conclusion According to pharmacists expert opinion, a large proportion of patients in Sweden experience DRM and preventable DRM, and the estimated COI of DRM is extensive. Since observational studies have not addressed the burden of DRM to the general public, this study adds the pharmacists perception on DRM. Other healthcare professionals perceptions on DRM need to be investigated in future studies.

Place, publisher, year, edition, pages
Springer Science and Business Media , 2012. Vol. 34, no 4, 538-546 p.
Keyword [en]
Adverse effects; Cost of illness; Decision trees; Delphi technique; Drug-related morbidity; Drug therapy; Preventability; Sweden
National Category
Medical and Health Sciences
URN: urn:nbn:se:liu:diva-80689DOI: 10.1007/s11096-012-9641-3ISI: 000306592600008OAI: diva2:547843
Available from: 2012-08-29 Created: 2012-08-29 Last updated: 2012-08-29

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Hägg, Staffan
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PharmacologyFaculty of Health SciencesClinical PharmacologyDepartment of Clinical Pharmacology
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