Is there a need to control the placebo in placebo controlled trials?

Ítems similars

• Placebos and placebo effects in medicine: historical overview.
  per: de Craen, A J, et al.
  Publicat: (1999)
• Reactions to treatment debriefing among the participants of a placebo controlled trial
  per: Di Blasi, Zelda, et al.
  Publicat: (2005)
• Ribavirin in respiratory syncytial virus infection. A double blind placebo controlled trial is needed.
  per: Isaacs, D, et al.
  Publicat: (1988)
• Placebo effect in the treatment of duodenal ulcer
  per: de Craen, Anton J M, et al.
  Publicat: (1999)
• Bromocriptine in mania--a placebo-controlled double-blind trial.
  per: Smith, A H, et al.
  Publicat: (1980)