Run-in period
Run-in period
The Run-in period (pronunciation: /ˈrʌn ɪn ˈpɪəriəd/) is a term used in clinical trials to describe a preliminary phase before the actual study begins.
Etymology
The term "run-in period" is derived from the English words "run-in", which means to prepare or warm up, and "period", referring to a specific length of time. In the context of clinical trials, it refers to a preparatory phase where all participants receive the same treatment before the actual study begins.
Definition
In a clinical trial, the run-in period is a phase that occurs after participant enrollment but before randomization. During this time, all participants may receive the same treatment, such as a placebo or active treatment, or no treatment at all. The purpose of the run-in period is to stabilize participants' conditions, eliminate participants who are non-compliant or who experience adverse effects, and provide a baseline for comparison during the trial.
Related Terms
- Clinical trial: A research study that tests how well new medical approaches work in people.
- Placebo: A substance that has no therapeutic effect, used as a control in testing new drugs.
- Randomization: The process of assigning trial subjects to treatment or control groups using an element of chance to determine the assignments in order to reduce bias.
See Also
External links
- Medical encyclopedia article on Run-in period
- Wikipedia's article - Run-in period
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