Multicenter Study
Multicenter Study - Related Videos
10:26
A Multicenter MRI Protocol for the Evaluation and Quantification of Deep Vein Thrombosis
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Cited by 5 •
2015
The goal of this study is to use magnetic resonance venography with long-circulating gadolinium-based contrast agent and direct thrombus imaging for quantitative evaluation of DVT volume in a multicenter, clinical trial setting. Inter- and intra-observer variability assessments were conducted, and reproducibility of the protocol was determined.
14:45
Enumeration of Major Peripheral Blood Leukocyte Populations for Multicenter Clinical Trials Using a Whole Blood Phenotyping Assay
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Cited by 14 •
2012
In this report, we demonstrate the staining and analysis steps of a phenotyping assay performed on fresh whole blood to enumerate major innate and adaptive leukocyte populations. We emphasize considerations for performing these procedures in the context of a multicenter clinical trial.
01:22
Case Studies
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2020
There are many research methods available to psychologists in their efforts to understand, describe, and explain behavior and the cognitive and biological processes that underlie it. In 2011, the New York Times published a feature story on Krista and Tatiana Hogan, Canadian twin girls. These particular twins are unique because Krista and Tatiana are conjoined twins, connected at the head. There is evidence that the two girls are connected in a part of the brain called the thalamus, which is a...
01:37
A Preterm Rat Model for Pain Studies
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2024
Here, we present a concise protocol for creating a preterm rat model, facilitating research on early postnatal pain management. The method involves performing a cesarean section three days before the expected birth, extracting preterm rat pups via hysterectomy, and integrating them with the biological offspring of a surrogate dam.
09:29
Self-administration Studies
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2023
Behavioral reinforcement induced by the rewarding feelings following substance use sometimes leads to addiction, which is demonstrated by increased self-administration. Drug self-administration studies in rodents model human behavior during drug abuse. These models are useful in understanding the neurobiological behavior of addiction in order to help scientists discover new treatments for drug dependence. This video reviews the concepts underlying self-administration studies. A general...
FAQs
Comparability depends on coordinating the elements that generate and measure the evidence. Investigators align eligibility criteria, specimen collection, laboratory assays, data-management procedures, and quality-control practices across participating sites. This reduces differences caused by inconsistent methods, making it more reasonable to compare measurements or combine results while still recognizing that each site may contribute distinct participant groups and settings.
Governance establishes how participating institutions coordinate the shared protocol, data-management procedures, and quality-control practices. It also supports consistent implementation across independent sites and clarifies how site-level variation should be considered during interpretation. Without clear governance, differences in procedures or oversight could weaken comparisons and make combined evidence less reliable.
Including participants from different groups and settings can show whether findings extend beyond the population and conditions represented at a single institution. This broader evidence may strengthen conclusions about immune responses, pathogen prevalence, diagnostic performance, treatment outcomes, or vaccine effectiveness. Generalizability still depends on coordinated methods so that observed differences are not simply caused by inconsistent study practices.
Site-level variation reflects differences among the participant groups and settings represented by independent research locations. It should be considered when investigators compare or combine measurements, because results may vary across sites even when the shared protocol is followed. Recognizing this variation helps researchers judge whether findings are consistent across settings or apply mainly to particular study locations.
Before collection begins, investigators should establish common eligibility criteria, specimen-collection procedures, laboratory assays, data-management practices, and quality-control requirements. These components form a coordinated workflow for producing comparable evidence at each location. Applying the same procedures supports later comparison or combination of measurements and helps limit differences attributable to local implementation rather than the research question.
Researchers may choose this design when they need evidence across different participant groups or settings, rather than observations from one institution alone. It can support investigations of immune responses, pathogen prevalence, diagnostic performance, treatment outcomes, and vaccine effectiveness. Using multiple sites is particularly relevant when the intended conclusion should extend beyond the population or setting of a single location.
A coordinated investigation across sites can provide evidence about how immune responses or pathogen prevalence appear across participant groups and settings. It can also assess diagnostic performance, treatment outcomes, or vaccine effectiveness using measurements collected under aligned conditions. The resulting evidence may support broader interpretation, provided investigators account for site-level variation and maintain consistent laboratory and data procedures.