Definitions for "Placebo-controlled"
a study that gives a harmless imitation of a drug to a designated number of people as a reference for others taking the drug being studied.
A kind of study in which the experimental treatment being tested is compared to no treatment at all.
A term used to describe a method of research in which an inactive substance (a placebo) is given to one group of participants, while the treatment (usually a drug or vaccine) being tested is given to another group. The results obtained in the two groups are then compared to see if the investigational treatment is more effective than the placebo.