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Open trial
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Open trial

If both the doctors and the participants of a scientific study know who is receiving a treatment under study and who is receiving another treatment (or no treatment at all), the procedure is called an open trial (or open study). The results have to be taken with a handful of salt: open trials are not at all reliable. In such studies, it isn't possible to determine which effects are due to the treatment itself and which are due to the placebo effect . The main use of open trials is to look for severe adverse effects of a treatment. For this reason, they are sometimes called "drug-monitoring studies."



Last reviewed October 2007 by EBSCO CAM Review Board

Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.


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