![Risk of bias (RoB)](https://training.cochrane.org/sites/training.cochrane.org/files/public/styles/feature_wide/public/uploads/feature_images/RoB%20banner_0.jpg?itok=BNKJAjtY)
Risk of bias (RoB)
The resources in this collection mostly cover the Cochrane risk-of-bias tool for randomized trials (RoB 2). Under 'Risk of bias tools' there is also guidance on ROBINS-I tool for assessing risk of bias in non-randomized studies.