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Guidance for peer reviewers
All unpublished manuscripts are confidential documents. If we invite you to review an article please do not discuss it even with a colleague: if you would like to pass it on to someone else to review please email firstname.lastname@example.org first.
The BMJ uses open peer review so that authors know who has reviewed their work. This means that you will be asked to give your name and position, and any relevant competing interests, in your report on any article we send you. It does not mean that authors should contact you directly; we ask them to direct any queries through us. Nor should you contact the author directly.
As a reviewer you will be advising the editors, who make the final decision (aided by an editorial committee for all research articles and most analysis articles). We will let you know our decision. We will pass on your signed report to the author, so please do not make any comments that you do not wish the author to see. Even if we do not accept an article we would like to pass on constructive comments that might help the author to improve it.
Authors can now nominate other BMJ Journals that they would like their manuscript to go to automatically if it is rejected by the first journal. The system also passes on editors' comments and peer reviewers' reports relating to that manuscript, to facilitate the review process at the next BMJ Journal. This means that your review might be read by other editors within the BMJ Group in due course.
Writing your review
BMJ peer reviewers do not have to fill in standard appraisal forms. But we do ask all reviewers to consider this general guidance:
When you provide your review via our online editorial office we will ask you to declare any competing interest that might relate to the article.
Please give detailed and constructive comments (with references, whenever possible) that will both help the editors to make a decision on the article and the authors to improve it.
For all articles
- Is the article important?
- Will it help our readers to make better decisions and, if so, how?
- Will the article add enough to existing knowledge?
- Does the article read well and make sense? Does it have a clear message?
For research articles
- Originality — does the work add enough to what is already in the published literature? If so, what does it add? Please cite relevant references to support your comments on originality.
- Importance of the work to general readers — does this work matter to clinicians, researchers, policymakers, educators, or patients? Will it help our readers to make better decisions and, if so, how? Is a general medical journal the right place for it?
- Scientific reliability
- Research question — clearly defined and appropriately answered?
- Overall design of study — appropriate and adequate to answer the research question?
- Participants — adequately described, their conditions defined, inclusion and exclusion criteria described? How representative were they of patients whom this evidence might affect?
- Methods — adequately described? Main outcome measure clear? Is the study fully reported in line with the appropriate reporting statement or checklist (these are all collected and regularly updated at http://www.equator-network.org/)? Was the study ethical (this may go beyond simply whether the study was approved by an ethics committee or IRB)?
- Results — answer the research question? Credible? Well presented?
- Interpretation and conclusions — warranted by and sufficiently derived from/focused on the data? Discussed in the light of previous evidence? Message clear?
- References — up to date and relevant? Any glaring omissions?
- Abstract/summary/key messages/what this paper adds — reflect accurately what the paper says?
- Documents in the supplemental files eg checklists for reporting statements eg CONSORT, PRISMA, and STROBE (see http://www.equator-network.org for other examples and for extensions to existing statements); and the protocol for an RCT. Do these properly match what is in the manuscript? Do they contain information that should be better reported in the manuscript, or raise questions about the work?
Not all of these points will be relevant for non-research articles. Please use your discretion about the above list when reporting on other types of article.
Some types of article need more specific appraisal, and you may find it useful to look at our checklists.