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Trial Design

Adaptive Design — What It Means in Clinical Trials

Plain English Definition

An adaptive trial allows researchers to modify the study while it is running, based on interim results. For example, they might drop a treatment arm that is not working, change the dose, or adjust how many participants are needed. These changes follow pre-planned rules and are approved by regulators.

Why It Matters

Adaptive trials can be faster and more efficient, which may mean you get answers sooner. They also reduce the chance of participants staying on a treatment that early data shows is not effective.

Example

A listing may mention: "Adaptive platform trial — treatment arms may be added or dropped based on interim analyses." This means the trial structure can change as data comes in.

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