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Evidence Synthesis Academy
Evidence Synthesis Academy

Evidence Synthesis Academy

Training the next generation of evidence synthesis consumers and producers

Risk of bias in your systematic review

Back to: Assess for Risk of Bias

So far, we have discussed sources of bias for individual studies. But there’s also the potential for bias when combining studies into a systematic review.

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Descriptions and Visualizations, continued
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Publication bias

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Next PostNext Risk of bias and why it matters
  • Why bias matters
    • Risk of bias and why it matters
    • What is risk of bias?
    • But these studies are peer reviewed
    • The big idea behind risk of bias
    • Risk of bias in RCTs
    • Measuring bias is tricky
    • Levels of risk of bias assessment
    • Your risk of bias approach might alter your conclusions
    • 1st approach to risk of bias
    • 2nd approach to risk of bias
    • Risk of bias is subjective
  • Assess for bias
    • How to assess for risk of bias
    • Risk of bias levels
    • Types of bias
    • Types of bias, continued
    • Risk of bias domains
  • Bias in group selection
    • Random sequence generation
    • Test your instincts: Random Sequence Generation
    • Make your assessment: Randomizing Participants
    • What happens if you see unusual random results?
    • Are uneven groups a sign of high risk of bias?
    • Allocation concealment
    • Test your instincts: allocation concealment
    • Make your assessment: Allocation Concealment
  • Bias in data collection
    • Risk of bias domains: data collection
    • Masking/Blinding
    • Masking for Performance Bias
    • Masking for Detection Bias
    • Sometimes blinding isn’t possible
    • How to assess for masking/blinding
    • Blinding confusion
    • Missing participant data
    • Does missing participant data matter?
    • Test your instincts: Missing Participant Data
    • Make your assessment: Missing Participant Data
    • Incomplete outcome reporting
    • Make your assessment: Outcome Reporting
  • Describing bias
    • Now what?
    • Where does risk of bias belong?
    • Descriptions and visualizations
    • Descriptions and Visualizations, continued
  • Other sources of bias
    • Risk of bias in your systematic review
    • Publication bias
    • Other challenges with outcomes
    • Next steps

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This website was developed with a R25 grant (PI: Schmid 5R25H5023299-03) from the Agency for Healthcare Research and Quality.