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...

पूर्ण विवरण

ग्रंथसूची विवरण

में प्रकाशित:	BMC Med Res Methodol
मुख्य लेखकों:	Godwin, Marshall, Ruhland, Lucia, Casson, Ian, MacDonald, Susan, Delva, Dianne, Birtwhistle, Richard, Lam, Miu, Seguin, Rachelle
स्वरूप:	Artigo
भाषा:	Inglês
प्रकाशित:	BMC 2003
विषय:	Debate
ऑनलाइन पहुंच:	https://ncbi.nlm.nih.govhttps://pmc.ncbi.nlm.nih.gov/articles/PMC317298/ https://ncbi.nlm.nih.govhttps://pubmed.ncbi.nlm.nih.gov/14690550/ https://ncbi.nlm.nih.govhttps://doi.org/10.1186/1471-2288-3-28
टैग:	टैग जोड़ें कोई टैग नहीं, इस रिकॉर्ड को टैग करने वाले पहले व्यक्ति बनें!