Article · Volume 12, Issue 4 · pp. 360–365
Under-reporting of Adverse Drug Reactions among Healthcare Professionals in Brazil: An Estimate Based on National Pharmacovigilance Survey
José Romério Rabelo Melo1,2, Elisabeth Carmen Duarte3, Karla de Araújo Ferreira1,4, Yannie Silveira Gonçalves1,4, Marcelo Vogler de Moraes1,4, Paulo Sergio Dourado Arrais5
- 1Brazilian Health Regulatory Agency (Anvisa)/ Brasília-DF, BRAZIL.
- 2Graduate Program of Pharmaceutical Sciences - Federal University of Ceará (UFC), Fortaleza-CE, BRAZIL.
- 3Epidemiology at Tropical Medicine Center, Faculty of Medicine, University of Brasilia. Brasilia-DF, BRAZIL.
- 4National Medicines Monitoring Center (CNMM) / Brazilian Health Regulatory Anvisa), Brasília-DF, BRAZIL.
- 5Department of Pharmacy, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará. Fortaleza-CE, BRAZIL.
Abstract
Background: Adverse Drug Reaction (ADR) is a public health problem with an impact on health care costs. Spontaneous reporting comprises the primary method for detection ADR’s. However, high levels under-reporting represents a barrier in pharmacovigilance.Objectives: The present study aims to estimate the prevalence of under-reporting ADR professionals in Brazil and to analyze the factors associated with under-reporting.Methods: Used a cross-sectional study based on an online survey for healthcare professionals conducted by the Brazilian Health Regulatory Agency (Anvisa). Unconditional logistic regression was performed and adjusted odd ratios (OR) were estimated.Results: In total 789 questionnaires were analyzed and based on the criteria, 67.5% of professionals were considered under-reporters. The main reason for under-reporting was the lack of access to vital data for notification (33.8%). 52.7% of the participants stated that the existence of a simpler system to notify motivated its use. It was found that residents in the Southern region of Brazil have 2.3 times the chance of under-reporting an ADR than those in the Southeast region (OR = 2.3; IC 95%:1.3-4.2). Having advanced knowledge in pharmacovigilance (OR=0.5; IC 95%: 0.4-0.7) and performing notification even without the causal certainty of the event (OR = 0.5; IC 95%:0.3-0.7) were protective factors for under-reporting, while not applicating knowledge routinely was considered a risk factor for under-reporting (OR = 4.4; IC 95%:2.1-9.2).Conclusion: A high rate of professionals considered as under-reporters of ADRs in Brazil has been detected. This study will make an important contribution to health managers and drug regulators for strengthen the national pharmacovigilance system.
Keywords: Drug-Related Side Effects and Adverse Reactions; Pharmacovigilance; Adverse Drug Reaction Reporting Systems; Health Care Coordination and Monitoring; Health Education
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