How to use Risk of bias 2.0 (RoB 2.0) tool in RevMan Web


Risk of Bias 2 is currently being piloted with selected reviews. If you are interested in joining the pilot, please contact Ella Flemyng (

Reviews generally enter the pilot before the protocol is published, as Risk of Bias 2 should ideally be mentioned in the Methods section of the protocol. If you are interested in making the switch to Risk of Bias 2 for a review at a later stage, please contact Ella to discuss. 

Enabling Risk of Bias 2 in your review will break the compatibility between RevMan Web and RevMan 5.

  • When a review in RevMan Web is switched to Risk of Bias 2, you can no longer check the review out into RevMan 5. 
  • It may therefore be advisable to wait for a specific point in the editorial process before enabling the integration (e.g. until after studies have been imported from Covidence).

1. Switch to RoB 2.0

For the pilot of the Risk of Bias 2 integration in RevMan Web your review will be switched to RoB 2.0 tool by the Review Production Support Team. (Beyond pilot stage, users themselves will be able to select between RoB 1.0 and RoB 2.0.)

To check that your review is set up for using RoB 2.0, go to Included studies, then click on the ‘Risk of Bias Setup’ button.

2. Note the domains of the RoB 2.0 tool

The domains will now include the ones covered by the RoB 2.0 tool. Note that the first domain (Bias arising from the randomization process) is study-level, while all others are outcome-level. Also, note that all the domains are fixed and you cannot edit them, which is different from the RoB 1 tool.

3. Select the analysis

In the Analyses, go to the analysis (outcome) where you want to add your judgement, then click on 'Edit Analysis'.

4. Go to risk of bias judgements

To add a risk of bias judgements for a particular result, click on the 'Action' button on each study row and select 'Edit risk of bias'.

5. Enter the risk of bias judgements

For each domain, make a judgement (low risk of bias, some concerns, or high risk of bias) and add a supporting text. At the moment this needs to be done manually, i.e. there is no way to automatically transfer these judgements from a file or an application.

As mentioned before, the first domain (Bias arising from the randomization process) is study-level and all changes made for this domain will apply to all results within the study.

6. View the risk of bias summary graph

To view the graph summary of your risk of bias judgements, go back to the analysis and click on the 'Graphs' tab. The results for which you have not entered the risk of bias judgements will be indicated by the orange icons with exclamation marks.