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Title
Is the placebo powerless? Update of a systematic review with 52 new randomized trials comparing placebo with no treatment.
Authors
Hróbjartsson, A; Gøtzsche, P C
Abstract
It is widely believed that placebo interventions induce powerful effects. We could not confirm this in a systematic review of 114 randomized trials that compared placebo-treated with untreated patients.
Publication
Journal of internal medicine, 2004, Vol 256, Issue 2, p91