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Placebo-controlled study

Placebo-controlled studies are a way of testing a medical therapy in which, in addition to a group of subjects that receives the treatment to be evaluated, a separate control group receives a sham "placebo" treatment which is specifically designed to have no real effect. Placebos are most commonly used in blinded trials, where subjects do not know…

History, Declaration of Helsinki & Methodology

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Methodology

Implementation issues

History

Declaration of Helsinki

Non-drug treatments

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Placebo-controlled study

Nodes88
Edges87
Triples9
Avg. degree1.98
Density0.022727
Components1

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Important terminology

placebo treatment trial group drug active efficacy subjects clinical control test study medical natural trials treatments may one drugs given

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
regression to the meaninstance ofdue to the body's natural healing ability and statistical effects0.80text
many patients will get better even when given no treatment at allinstance ofdue to the body's natural healing ability and statistical effects0.80text
confirmation biasinstance ofGood blinding may reduce or eliminate experimental biases0.80text
the placebo effectinstance ofGood blinding may reduce or eliminate experimental biases0.80text
the observer effectinstance ofGood blinding may reduce or eliminate experimental biases0.80text
and othersinstance ofGood blinding may reduce or eliminate experimental biases0.80text
the use of Cimetidine to treat ulcersinstance ofin particular cases0.80text
a significant level of placebo response can also prove to be an index of how much the treatment has been directed at a wrong targetinstance ofin particular cases0.80text
blinding the person providing the psychological non-drug interventioninstance ofthere are methodological challenges0.80text

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