A randomized controlled trial (RCT) is a type of statistical experiment designed to evaluate the efficacy or safety of an intervention by minimizing bias through the random allocation of participants to one or more comparison groups. In this...
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...
A cluster-randomised controlled trial (cRCT, CRCT) is a type of randomised controlled trial in which groups of subjects (as opposed to individual subjects) are randomised. Cluster randomised controlled trials are also known as cluster-randomised...
The proposed hepatitis B vaccine trial in Guinea-Bissau, also known as the HBV-NSE trial, was a proposed randomized controlled trial assertedly intended to investigate the effects of administering the hepatitis B vaccine to newborn infants in...
Tension and Trauma Releasing Exercises (TRE), also known as Trauma Releasing Exercises, is a body based stress reduction method developed in the early 2000s by David Berceli. The method consists of a sequence of physical exercises intended to induce...
The TOPS System (Total Posterior Spine System) is a spinal implant designed to stabilize the lower spine and maintain range of motion following lumbar decompression surgery for spinal stenosis and related conditions. Unlike spinal fusion, which...
A hierarchy of evidence, comprising levels of evidence (LOEs), that is, evidence levels (ELs), is a heuristic used to rank the relative strength of results obtained from experimental research, especially medical research. There is broad agreement on...
A scientific control is an element of an experiment or observation designed to minimize the influence of variables other than the independent variable under investigation, thereby reducing the risk of confounding. The use of controls increases the...
The psychological and physiological effects of meditation have been studied. In recent years, studies of meditation have increasingly involved the use of modern instruments, such as functional magnetic resonance imaging and electroencephalography,...
Clinical trials are prospective biomedical or behavioral research studies on human participants designed to answer specific questions about biomedical or behavioral interventions, including new treatments (such as novel vaccines, drugs, dietary...
