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slideserve.com
Randomized Controlled Trials (RCT) - SlideServe
Randomized Controlled Trials (RCT). Definition of levels of evidence and grading of recommendation. Study Designs. Exposure NOT manipulated by Investigator. OBSERVATIONAL. Descriptive. Analytic. Case-series Cross-sectional Ecological. Cohort Case-control. EXPERIMENTAL.
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How do researchers know whether something is working? Randomized controlled trials are a research method perhaps best known for testing medication effectiveness, but can also be used to assess programs and policies. Learn how they work and how AIR experts use them to generate evidence that improves peoples' lives. | American Institutes for Research (AIR)
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