GRT Course Part 3: Sample Size and Power
Part 3 explores power and sample size for GRTs, IRGT trials, and SWGRTs. It introduces resources from the NIH Research Methods Resources website that can be used for power and sample size estimation in these designs and provides a brief tutorial for sample size estimation in a parallel GRT.

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GRT Course Part 2: Analytic Methods

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GRT Course Part 4: Alternative Designs

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Insights into the Efficiency and Benefits of Staircase Cluster Randomized Trial Designs (MtG)

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GRT Course Part 1: Randomized Designs for Clinical Trials

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Implications of Informative Cluster Size for Design & Analysis of Cluster Randomized Trials (MTG)

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Design & Analytic Considerations for Time to Event Outcomes in Randomized Clinical Trials (MtG)

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Emerging Evidence for Strategies to Prevent Alzheimer’s Disease (pFocus)

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Evaluating Synergies in Multilevel Interventions: Mental Health in Schools as an Exemplar (MtG)

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About the Quit & Thrive Challenge: Community-Derived Solutions to Reduce Menthol Cigarette Smoking

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Design & Analysis Considerations for Assessing HTE in Cluster-Randomized Trials (MtG)

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Computational Models: Health Effects of Menthol Cigarettes & Benefits of a Menthol Ban (MtG)

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Unlocking Solutions: Menthol Smoking Cessation Strategies (pFocus)

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Global Food Security: Research to Inform Evidence-based Policies and Practices (pFocus)

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Cardiovascular Disease Prevention in Asian Americans (ESIL)

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Type 1 Diabetes Management in the U.S.: Epidemiologic Evidence, Trends, & Emerging Challenges (ESIL)

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Design Multilevel Interventions to Eliminate Impact of Harmful Social Determinants of Health (MtG)

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