Compare the review's RoB 2 assessments with the evidence table to find the missing study, then add its rating and written justification and check the synthesis for consistency.
RoB 2 (Risk of Bias 2) assesses a specific randomized-trial result across bias domains using signalling questions and written justifications, producing a judgement of low risk, some concerns, or high risk. The rating belongs to that result, so match the omitted row to the same study result the review assessed.
- Locate the omission: list every study result in the review's RoB 2 assessment and every row in the evidence table, then identify the result present in one and absent from the other. Expected result: a single named study result with no rating in the table.
- Copy the existing judgement and justification: take the domain-level judgements, the overall rating, and the written justification from the review's RoB 2 record for that result. Expected result: the table row carries the same overall judgement the review already made.
- Record the completion: add the rating and its justification to the row and note that the entry was completed from the review's RoB 2 assessment. Expected result: the table now shows a rating for every assessed result.
- Verify against the synthesis: read the review's conclusions and check that any statement about study quality or certainty matches the ratings now in the table. Expected result: the synthesis and the table describe the same risk-of-bias pattern, or a discrepancy is flagged for the review author.
If the review has no RoB 2 assessment for that result, the omission sits upstream of the table. Mark the rating as unresolved and route it to the person responsible for the risk-of-bias assessment.