Association of Peer Review with Completeness of Reporting, Transparency for Risk of Bias, and Spin in Diagnostic Test Accuracy Studies Published in Imaging Journals

Objective To evaluate whether peer review of diagnostic test accuracy (DTA) studies published by imaging journals is associated with changes in completeness of reporting, transparency of risk of bias, and spin, given that there is limited evidence to support the concept that peer review improves the completeness of research reporting.1,2 Design This retrospective cross-sectional study evaluated articles published in the Journal of Magnetic Resonance Imaging (JMRI; 2019 impact factor [IF], 4.0), the Canadian Association of Radiologists Journal (CARJ; IF, 1.7), and European Radiology (EuRad; IF, 4.1) before March 31, 2020.3 Initial submitted and final versions of manuscripts were screened consecutively in reverse chronological order to include a minimum of 23 articles (based on power calculation) per journal. At least 30 eligible articles from each journal were collected when available to account for potential exclusions. Primary studies evaluating the diagnostic accuracy of an imaging test in humans were included. Studies exclusively reporting on prognostic or predictive tests were excluded. Studies were evaluated independently by 2 reviewers blinded to version for completeness of reporting using the Standards for Reporting Diagnostic Accuracy Studies (STARD) 2015 and STARD for Abstracts guidelines, transparency of reporting for risk of bias assessment based on the Quality Assessment of Diagnostic Accuracy Studies-2 (QUADAS-2), and actual and potential spin using modified published criteria. Two-tailed paired t-tests and paired Wilcoxon signed-rank tests were used for comparisons; P < .05 was considered statistically significant. Results Of 692 diagnostic accuracy studies screened, 84 articles published in 2014 to 2020 from 3 journals were included: JMRI, 30 articles; CARJ, 23; and EuRad, 31. Reporting by STARD 2015 increased between initial submissions and final accepted versions (mean reported items 16.67 vs 17.47; change, 0.80 [95% CI, 0.25 to 1.17]; P = .002). From STARD, sources of funding and other support (item 30.1) and role of funders (item 30.2) had the largest change of 0.32 (P < .001). No difference was found for the reporting of STARD for Abstracts (5.28 vs 5.25; change, −0.03; 95% CI, −0.15 to 0.11; P = .74); QUADAS-2 (6.08 vs 6.11; 0.03; 95% CI, −1.00 to 0.50; P = .92); actual spin (2.36 vs 2.40; change, 0.04; 95% CI, 0.00 to 1.00; P = .39); or potential spin practices (2.93 vs 2.81; change, −0.12; 95% CI, −1.00 to 0.00; P = .23) (Figure 20). https://assets.underline.io/uploads/markdown_image/1/image/54b0fafbe137d88e35b76a7ddac25b9a.png Conclusions This retrospective cross-sectional study found that peer review was associated with a marginal improvement in completeness of full text; however, it was not associated with abstract reporting in published imaging DTA studies nor with improvement in transparency for risk of bias assessment or reduction in spin. Considering that this study included articles from only 3 radiology journals, the findings may not be generalizable to other journals, other fields of DTA research, or non-DTA study designs. Interventions such as reviewer training and use of checklists should be evaluated. References 1. Jefferson T, Rudin M, Brodney Folse S, Davidoff F. Editorial peer review for improving the quality of reports of biomedical studies. Cochrane Library. 2020. doi:10.1002/14651858.MR000016.pub3 2. Bruce R, Chauvin A, Trinquart L, Ravaud P, Boutron I. Impact of interventions to improve the quality of peer review of biomedical journals: a systematic review and metaanalysis. BMC Medicine. 2016;14(1):1-16. doi:10.1186/ s12916-016-0631-5 3. Clarivate Analytics. Journal Citation Reports. 2019 Journal Impact Factor. Accessed July 11, 2020. https://clarivate.com/blog/announcing-the-2019-journal-citation-reports/ Conflict of Interest Disclosures Mark Schweitzer, Yves Menu, Michael Patlas, and Kelly D. Cobey have active affiliations with the 3 journals used as data sources but had no role in data extraction, analysis, or interpretation, but reviewed and approved the work. Michael Patlas reported an editorial honorarium from Springer outside of the submitted work. No other disclosures were reported. Funding/Support Funding support was received from the Philips−Radiological Society of North America research seed grant (RSNA Research & Education Foundation), Mitacs Research Training Award, and the Department of Radiology MD Summer Student Fund at the University of Ottawa. Study performance and manuscript content were the sole task and responsibility of the investigators and do not necessarily represent the official views of the funders. Role of the Funder/Sponsor The funders had no role in data collection, analysis, interpretation, or manuscript composition. Acknowledgments Sakib Kazi and Robert A. Frank contributed equally to this work. https://assets.underline.io/uploads/markdown_image/1/image/0407c7b1d6b20790b2200ea4ae9cd9e1.png

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