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Gaceta Sanitaria

versión impresa ISSN 0213-9111


VALLANO FERRAZ, Antonio; AGUSTI ESCASANY, Antonia; PEDROS XOLVI, Consuelo  y  ARNAU DE BOLOS, Josep M.ª. Systematic review of studies assessing the cost of adverse drug reactions. Gac Sanit [online]. 2012, vol.26, n.3, pp.277-283. ISSN 0213-9111.

Objective: Adverse drug reactions (ADRs) are an important healthcare problem. The objective of this study was to review published articles analyzing the cost of ADRs in any healthcare setting. Method: We conducted a search of articles published on the cost of ADRs in the bibliographic databases from 1970 to 2010. We identified 28 studies and selected 16 that included cases of ADR fitting the World Health Organization's definition of these events. The information on the characteristics of the study design, the types of costs analyzed and the reported results were reviewed. Results: The design features and populations included in the studies were heterogeneous. Only two studies explicitly defined the perspective adopted. Only five studies compared cases of ADR with matched controls without ADRs. All studies analyzed direct healthcare costs, but none analyzed indirect or intangible costs. Fourteen publications analyzed the costs of length of hospital stay. The average (SD) percentage of ADRs was 3.04% (0.2) [median 2.4%, range 0.7% to 26.1%]. The median length of hospital stay in patients with ADRs was 8.8 days (range: 0.15 to 19.2 days). Accounting systems and monetary costs varied widely. Conclusion: Studies on the costs of ADRs are highly heterogeneous and have evaluated direct healthcare costs in hospitals. Their results indicate that ADRs generate substantial costs. More studies using appropriate methodology are needed on the costs of ADRs.

Palabras clave : Cost and cost analysis; Drug toxicity; Adverse drug reaction reporting systems.

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