Utilize este identificador para referenciar este registo: http://hdl.handle.net/10451/32138
Título: Bias in clinical studies
Outros títulos: Viéses em estudos clínicos
Autor: Carneiro, António Vaz
Palavras-chave: Error in clinical studies
Bias in clinical studies
Internal validity
Evidence-based medicine
Data: Fev-2011
Editora: Sociedade Portuguesa de Cardiologia
Citação: Rev Port Cardiol 2011; 30 (02): 235-242
Resumo: Clinical studies are designed fundamentally to obtain data to support practice, whether diagnostic, therapeutic or prognostic. No matter how well a study was designed, implemented or analyzed, it is never possible to guarantee the truth of its results with absolute certainty. This is due to two factors that can change the study's results: random error and systematic error (also called bias). The first appears without warning and cannot be modulated, while the second--defined as the systematic introduction of error into a study--can be removed (if not completely, at least partially). In this paper we present the most common types of bias found in clinical studies, whether therapeutic (clinical trials), or with other experimental or observational designs.
Peer review: yes
URI: http://hdl.handle.net/10451/32138
ISSN: 0870-2551
Versão do Editor: http://www.spc.pt/spc/publicacoes/rpc.aspx
Aparece nas colecções:FM-CEMBE-Artigos em Revistas Nacionais

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