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Multisite randomized controlled trials in health services research: scientific challenges and operational issues
M Weinberger1, E Z Oddone, W G Henderson
1Roudebush VAMC, Regenstrief Institute for Health Care, and Indiana University School of Medicine, Indianapolis, Indiana, USA. morris@hsrd.va.iupui.edu
Multisite randomized controlled trials (RCTs) enhance health services research by improving external validity and statistical power. This approach addresses challenges in implementation and offers timely results for healthcare organizations and policymakers.
Area of Science:
- Health Services Research
- Clinical Trials Methodology
Background:
- Randomized controlled trials (RCTs) are increasingly used in health services research.
- Multisite RCTs are a recent extension, offering advantages over single-site trials.
Purpose of the Study:
- To outline the advantages of multisite RCTs in health services research.
- To discuss the scientific and operational challenges of conducting multisite RCTs.
- To offer recommendations for researchers conducting multisite RCTs.
Main Methods:
- Review of methodological advantages of multisite RCTs.
- Discussion of scientific challenges including standardization of criteria, interventions, and data collection.
- Examination of operational issues such as site selection, randomization, and patient accrual.
Main Results:
- Multisite RCTs offer enhanced external validity and greater statistical power.
- They facilitate rapid recruitment for timely results.
- Challenges include standardizing protocols and managing operational aspects across sites.
Conclusions:
- Multisite RCTs are valuable for health services research, despite methodological and operational complexities.
- Addressing identified challenges is crucial for successful implementation.
- Recommendations are provided to guide researchers in conducting effective multisite RCTs.
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