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Abstract Introduction The authors formed a small working group to modernize the Methodological Expectations for Campbell Collaboration Intervention Reviews (MECCIR). We reviewed comments and feedback from editors, peer reviewers of Campbell submissions, and authors; for example, that the Campbell MECCIR was long and some of the items in the reporting and conduct checklists were difficult to cross‐reference. We also wanted to make the checklist more relevant for reviews of associations or risk factors and other quantitative non‐intervention review types, which we welcome in Campbell. Thus, our aim was to develop a shorter, more holistic guidance and checklist of Campbell Standards, encompassing both conduct and reporting of these standards within the same checklist. Methods Our updated Campbell Standards will be a living document. To develop this first iteration, we invited Campbell members to join a virtual working group; we sought experience in conducting Campbell systematic reviews and in conducting methods editor reviews for Campbell. We aligned the items from the MECCIR for conduct and reporting, then compared the principles of conduct that apply across review types to Preferred Reporting Items for Systematic Reviews and Meta‐Analyses (PRISMA)‐literature search extension (S) and PRISMA‐2020 reporting standards. We discussed each section with the aim of developing a parsimonious checklist with explanatory guidance while avoiding losing important concepts that are relevant to all types of reviews. We held nine meetings to discuss each section in detail between September 2022 and March 2023. We circulated this initial checklist and guidance to all Campbell editors, methods editors, information specialists and co‐chairs to seek their feedback. All feedback was discussed by the working group and incorporated to the Standards or, if not incorporated, a formal response was returned about the rationale for why the feedback was not incorporated. Campbell Policy The guidance includes seven main sections with 35 items multifaceted but distinct concepts that authors must adhere to when conducting Campbell reviews. Authors and reviewers must be mindful that multiple factors need to be assessed for each item. According to the Campbell Standards, the reporting of Campbell reviews must adhere to appropriate PRISMA reporting guidelines(s) such as PRISMA‐2020. How to Use The editorial board recommends authors use the checklist during their work in formulating their protocol, carrying out their review, and reporting it. Authors will be asked to submit a completed checklist with their submission. We plan to develop an online tool to facilitate use of the form by author teams and those reviewing submissions. Providing Feedback We invite the scientific community to provide their comments using this anonymous google form . Plan for Updating We will update the Campbell Standards periodically in light of new evidence.
Aloe et al. (Sun,) studied this question.