Parallel study
Parallel Study
A Parallel Study (pronunciation: /ˈparəˌlel ˈstədē/) is a type of clinical trial where two or more treatments, or interventions, are compared by randomly allocating participants into different groups.
Etymology
The term "Parallel Study" is derived from the concept of running multiple investigations simultaneously, or in parallel, to compare the effects of different treatments.
Description
In a Parallel Study, participants are randomly assigned to one of two or more groups. Each group receives a different treatment, and the outcomes of each group are then compared. This type of study design is commonly used in randomized controlled trials (RCTs), which are considered the gold standard in clinical research.
The main advantage of a Parallel Study is that it allows for a direct comparison between treatments. It also reduces the risk of bias because participants are randomly assigned to groups. However, it may require a larger sample size than other study designs, such as crossover studies, because each participant is only exposed to one treatment.
Related Terms
- Randomized Controlled Trial (RCT): A study in which participants are randomly assigned to receive either the treatment being tested or a placebo.
- Crossover Study: A type of clinical trial where participants receive multiple treatments in a random order.
- Bias: A systematic error in a study that can lead to inaccurate results.
- Placebo: A substance or treatment that has no therapeutic effect, used as a control in clinical trials.
- Blinding: A technique used in research to prevent bias by hiding the details of the study from the participants, the researchers, or both.
External links
- Medical encyclopedia article on Parallel study
- Wikipedia's article - Parallel study
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