Powerful Placebo: The Dark Side of the Randomised Controlled Trial
Kaptchuk, Ted J.
Lancet 1998 June 6; 351(9117): 1722-1725
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De Blasi, Zelda; Kaptchuk, Ted J.; Weinman, John; Kleijnen, Jos (2002-12-07)OBJECTIVES: To assess whether and how investigators of placebo controlled randomised trials inform participants of their treatment allocation at trial closure and to assess barriers to feedback. DESIGN: Postal survey with ...