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Attitudes toward Placebo-Controlled Clinical Trials of Patients with Schizophrenia in Japan

BACKGROUND: Although the use of placebo in clinical trials of schizophrenia patients is controversial because of medical and ethical concerns, placebo-controlled clinical trials are commonly used in the licensing of new drugs. AIMS: The objective of this study was to assess the attitudes toward plac...

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Detalles Bibliográficos
Autores principales: Sugawara, Norio, Ishioka, Masamichi, Tsuchimine, Shoko, Tsuruga, Koji, Sato, Yasushi, Furukori, Hanako, Kudo, Shuhei, Tomita, Tetsu, Nakagami, Taku, Yasui-Furukori, Norio
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4658191/
https://www.ncbi.nlm.nih.gov/pubmed/26600382
http://dx.doi.org/10.1371/journal.pone.0143356
Descripción
Sumario:BACKGROUND: Although the use of placebo in clinical trials of schizophrenia patients is controversial because of medical and ethical concerns, placebo-controlled clinical trials are commonly used in the licensing of new drugs. AIMS: The objective of this study was to assess the attitudes toward placebo-controlled clinical trials among patients with schizophrenia in Japan. METHOD: Using a cross-sectional design, we recruited patients (n = 251) aged 47.7±13.2 (mean±SD) with a DSM-IV diagnosis of schizophrenia or schizoaffective disorder who were admitted to six psychiatric hospitals from December 2013 to March 2014. We employed a 14-item questionnaire specifically developed to survey patients' attitudes toward placebo-controlled clinical trials. RESULTS: The results indicated that 33% of the patients would be willing to participate in a placebo-controlled clinical trial. Expectations for improvement of disease, a guarantee of hospital treatment continuation, and encouragement by family or friends were associated with the willingness to participate in such trials, whereas a belief of additional time required for medical examinations was associated with non-participation. CONCLUSIONS: Fewer than half of the respondents stated that they would be willing to participate in placebo-controlled clinical trials. Therefore, interpreting the results from placebo-controlled clinical trials could be negatively affected by selection bias.