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Pragmatic controlled clinical trials in primary care: the struggle between external and internal validity

BACKGROUND: Controlled clinical trials of health care interventions are either explanatory or pragmatic. Explanatory trials test whether an intervention is efficacious; that is, whether it can have a beneficial effect in an ideal situation. Pragmatic trials measure effectiveness; they measure the de...

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Detalles Bibliográficos
Autores principales:	Godwin, Marshall, Ruhland, Lucia, Casson, Ian, MacDonald, Susan, Delva, Dianne, Birtwhistle, Richard, Lam, Miu, Seguin, Rachelle
Formato:	Texto
Lenguaje:	English
Publicado:	BioMed Central 2003
Materias:	Debate
Acceso en línea:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC317298/ https://www.ncbi.nlm.nih.gov/pubmed/14690550 http://dx.doi.org/10.1186/1471-2288-3-28

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