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Risk of Bias Assessment Tool

Free

Create Risk of Bias (RoB 2) traffic light tables for your systematic review. Add studies, assign domain-level judgments, and export a publication-ready summary table as a high-resolution PNG.

How to Use

Add your studies and enter their names. Click each colored circle to cycle through judgments: + Low risk, ? Some concerns, − High risk, N/A. The Overall column should reflect the most severe domain judgment. When done, export the table as a high-resolution PNG for your manuscript.

+Low risk
?Some concerns
−High risk
Study
D1
Randomization process
D2
Deviations from interventions
D3
Missing outcome data
D4
Measurement of outcome
D5
Selection of reported result
Overall
Overall

RoB 2 (Sterne JAG et al., 2019) • Generated with Research Gold

Frequently Asked Questions

What is Risk of Bias 2 (RoB 2)?

RoB 2 is the revised Cochrane tool for assessing risk of bias in randomized trials. It evaluates five domains: bias arising from the randomization process, deviations from intended interventions, missing outcome data, measurement of the outcome, and selection of the reported result. Each domain is judged as Low risk, Some concerns, or High risk.

How do I determine the overall risk of bias?

The overall judgment follows the most severe domain judgment: if any domain is High risk, the overall is High. If no domain is High but at least one has Some concerns, the overall is Some concerns. Only if all domains are Low is the overall Low.

When should I use RoB 2 vs. other tools?

Use RoB 2 for randomized controlled trials. For non-randomized studies of interventions, use ROBINS-I. For diagnostic accuracy studies, use QUADAS-2. For prevalence studies, consider the JBI tool. This tool currently supports the RoB 2 framework.

Need Expert Quality Assessment?

Our team can conduct thorough risk of bias assessments with dual independent rating and consensus resolution for your entire review.

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