Evidence Synthesis Academy

Assess for Risk of Bias

Assess for Risk of Bias

This is the sixth part in a series of online courses about how to conduct a systematic review. If you haven’t completed the other steps yet, please visit our homepage to start from the beginning.

For more background on what a systematic review is and how it might help you answer an important question, check out our intro course.

If you are ready to assess your studies for risk of bias (rob), let’s get started!

Course Information

 

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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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