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Document type:
journal article 
Author(s):
Meissner, Karin; Fässler, Margrit; Rücker, Gerta; Kleijnen, Jos; Hróbjartsson, Asbjorn; Schneider, Antonius; Antes, Gerd; Linde, Klaus 
Title:
Differential effectiveness of placebo treatments: a systematic review of migraine prophylaxis. 
Abstract:
When analyzing results of randomized clinical trials, the treatment with the greatest specific effect compared with its placebo control is considered to be the most effective one. Although systematic variations of improvements in placebo control groups would have important implications for the interpretation of placebo-controlled trials, the knowledge base on the subject is weak.To investigate whether different types of placebo treatments are associated with different responses using the studies...    »
 
Journal title abbreviation:
JAMA Intern Med 
Year:
2013 
Journal volume:
173 
Journal issue:
21 
Pages contribution:
1941-51 
Language:
eng 
Print-ISSN:
2168-6106 
TUM Institution:
Institut für Allgemeinmedizin