External Validity of Randomised Controlled Trials: "To Whom Do the Results of This Trial Apply? "
Rothwell, Peter M.
Lancet 2005 January 1-7; 365(9453): 82-93
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Dennis, Martin; O'Rourke, Suzanne; Slattery, Jim; Staniforth, Trish; Warlow, Charles; McLean, Sheila (1997-04-12)OBJECTIVE: To examine the effect of contact with a stroke family care worker on the physical, social, and psychological status of stroke patients and their carers. DESIGN: Randomised controlled trial with broad entry criteria ...