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

Internet

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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