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      Conhecimento e voluntariedade para participação em pesquisas: um estudo descritivo com participantes de um ensaio clínico Translated title: Knowledge and willingness to participate in research: a descriptive study of volunteers in a clinical trial Translated title: Conocimiento y la voluntariedad de participar en la investigación: un estudio descriptivo con los participantes en un ensayo clínico

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          Abstract

          O objetivo deste estudo é avaliar o conhecimento sobre as informações do Termo de Consentimento Livre e Esclarecido (TCLE) e a voluntariedade de participantes de um ensaio clínico. Trata-se de um estudo quantitativo, descritivo, transversal, realizado em novembro de 2011 com participantes de um ensaio clínico realizado em Americaninhas, no Nordeste de Minas Gerais, Brasil. Amostra por conveniência, com 143 adultos de 18 a 45 anos, de ambos os sexos. Utilizou-se um questionário estruturado, aplicado uma semana após a assinatura do TCLE. A maioria dos participantes do ensaio clínico assinou o TCLE sem o conhecimento suficiente das informações da pesquisa, e sofreu influência em sua decisão de participar do ensaio clínico. Concluímos que a assinatura do TCLE não garante a expressão da autonomia de todos os participantes de pesquisa clínica.

          Translated abstract

          The aim of this study was to evaluate volunteers’ knowledge of the information on the free informed consent form and their willingness to participate in a clinical trial. This was a quantitative, descriptive, cross-sectional study conducted in November 2011 with subjects from a clinical trial in Americaninhas, northeast Minas Gerais State, Brazil. A convenience sample included 143 adults of both sexes, 18 to 45 years of age. A structured questionnaire was applied one week after signing the free informed consent form. Most participants signed the free informed consent without sufficient knowledge of the research information and were influenced in their decision to participate in the trial. The authors conclude that signing the free informed consent form fails to express all participants’ autonomy in clinical trials.

          Translated abstract

          El objetivo de este estudio es evaluar el conocimiento acerca de la información del Formulario de Consentimiento Informado y la disposición de los participantes para un ensayo clínico. Se trata de un análisis cuantitativo, descriptivo, de corte transversal, realizado en noviembre de 2011 con participantes de un ensayo clínico en Americaninhas, llevado a cabo en el nordeste de Minas Gerais, Brasil. Se trata de una muestra de conveniencia: 148 adultos entre 18 y 45 años, de ambos sexos. Se utilizó un cuestionario estructurado, cumplimentado una semana después de firmar el Formulario de Consentimiento Informado. La mayoría de los participantes del ensayo firmó el formulario de consentimiento informado sin un conocimiento suficiente de la investigación y fue influenciado en su decisión de participar en el ensayo clínico. Se concluye que la firma del formulario de consentimiento informado no garantiza la expresión de la autonomía de todos los participantes en la investigación clínica.

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          Most cited references137

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          Resolução nº 196, de 10 de novembro de 1996. Diretrizes e normas regulamentadoras de pesquisas envolvendo seres humanos

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            What makes clinical research in developing countries ethical? The benchmarks of ethical research.

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              Interventions to improve research participants' understanding in informed consent for research: a systematic review.

              Available data suggest that prospective research participants may frequently not understand information disclosed to them in the informed consent process. Little is known about how understanding can be improved. To review research on interventions to improve research participants' understanding of information disclosed in the informed consent process. A search of MEDLINE was performed using the terms informed consent and clinical research and informed consent and (comprehension or understanding) from 1966 to March 2004 , which included randomized controlled trials, longitudinal trials, and controlled trials with nonrandom allocation that compared the understanding of research participants who had undergone only a standard informed consent process to that of participants who had received an intervention to improve their understanding. A comprehensive bibliography of empirical research on informed consent published in January 1999 was also reviewed, as were personal files and all issues of the journals IRB and Controlled Clinical Trials. Study design, quality criteria, population characteristics, interventions, and outcomes for each trial were extracted. The statistical significance of the interventions' effects on understanding were noted, as were mean scores for understanding for each group of each trial. For those trials that measured the secondary outcomes of satisfaction and willingness to enroll, results were also summarized. Thirty studies described 42 trials that met inclusion criteria. Of 12 trials of multimedia interventions, 3 showed significant improvement in understanding. Of 15 trials of enhanced consent forms, 6 showed significant improvement in understanding (all P<.05), but 5 of 6 trials were of limited quality, casting doubt on their practical relevance. Of 5 trials of extended discussion, 3 showed significant improvement in understanding (all P<.001) and 2 showed trends toward improvement (P=.054 and P=.08). Of 5 trials of test/feedback, all showed significant improvement in understanding (all P<.05) but were flawed in that they may have mistaken rote memorization for improvement in understanding. Another 5 trials were put into a miscellaneous category and had varying impact on understanding. Some demographic factors, particularly lower education, were associated with less understanding. Satisfaction and willingness to enroll were never significantly diminished by an intervention . Efforts to improve understanding through the use of multimedia and enhanced consent forms have had only limited success. Having a study team member or a neutral educator spend more time talking one-on-one to study participants appears to be the most effective available way of improving research participants' understanding; however, further research is needed.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                csp
                Cadernos de Saúde Pública
                Cad. Saúde Pública
                Escola Nacional de Saúde Pública Sergio Arouca, Fundação Oswaldo Cruz (Rio de Janeiro )
                1678-4464
                June 2014
                : 30
                : 6
                : 1305-1314
                Affiliations
                [1 ] Universidade Federal de Minas Gerais Brazil
                Article
                S0102-311X2014000601305
                10.1590/0102-311X00127813
                b0218cc1-8f44-4b61-a1b7-083ecae033e2

                http://creativecommons.org/licenses/by/4.0/

                History
                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielosp.org/scielo.php?script=sci_serial&pid=0102-311X&lng=en
                Categories
                Health Policy & Services

                Public health
                Research Ethics,Clinical Trial,Informed Consent,Personal Autonomy,Ética en Investigación,Ensayo Clínico,Consentimiento Informado,Autonomía Personal,Ética em Pesquisa,Ensaio Clínico,Consentimento Livre e Esclarecido,Autonomia Pessoal

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