What is a sequential clinical trial?
Sequential trials are pre-planned, repeated series of comparisons that are stopped as soon as a decision can be made as to whether one treatment can be regarded as superior to another, or that both are equally effective.
What is a group sequential design?
Group sequential design is an example of a statistical approach in clinical trial design. It means that the sample size of the trial is not fixed in advance, and data is sequentially evaluated as it is collected. This is known as interim analysis, and might be carried out at several points in time.
What is an adaptive design in clinical trials?
An adaptive design is defined as a design that allows modifications to the trial and/or statistical procedures of the trial after its initiation without undermining its validity and integrity.  The purpose is to make clinical trials more flexible, efficient and fast.
What is the sequential method?
The sequential method is used to allocate the cost of service departments to other departments within an organization. Under this approach, the cost of each service department is allocated one department at a time. Once these costs have been allocated, the costs of the next service department are allocated.
What do you mean by sequential analysis?
Sequential analysis refers to a statistical method in which data are evaluated as they are collected, and further sampling is stopped in accordance with a predefined stopping rule as soon as significant results are observed. This contrasts to classical hypothesis testing where the sample size is fixed in advance.
What is the sequential approach?
Is group sequential design an adaptive design?
A group sequential design (GSD) is the simplest type of adaptive design that allows for premature termination of a trial due to efficacy or futility based on the results of the interim analyses (IA).
Where is adaptive design used?
Adaptive clinical trial designs have been used extensively in medical device development and the lessons learned from those studies are now being applied to drug development. Adaptive designs can potentially reduce the number of patients in a trial and the number of trials overall.
What is adaptive design where it is used give examples?
So, when you open a browser on the desktop, the site chooses the best layout for that desktop screen; resizing the browser has no impact on the design. Some sites have been quick to embrace adaptive design. Amazon, USA Today, Apple, and About.com configured themselves to be mobile-optimized websites.
What is clinical trial design?
Designing Clinical Trials. Researchers design clinical trials to answer specific research questions related to a medical product. These trials follow a specific study plan, called a protocol, that is developed by the researcher or manufacturer.
What is a clinical study design?
Clinical study design is the formulation of trials and experiments, as well as observational studies in medical, clinical and other types of research (e.g., epidemiological) involving human beings.
What is the quality of clinical trials?
“Quality in clinical trials”, therefore, is defined as the absence of errors that matter. CTTI sought to identify best practices and develop methods and tools to apply principles of QbD to the scientific and operational design of clinical trials.
What is a trial design?
TRIAL DESIGN. an outline or strategy of the circumstances of a clinical trial which must be satiated in effort to optimally assess the effectiveness of a new remediation. TRIAL DESIGN: “The trial design isn’t at all what the panel was expecting.”.