Endorsement of reporting guidelines and clinical trial registration across Scopus-indexed rheumatology journals: a cross-sectional analysis.

The purpose of this study was to investigate the instructions for authors of rheumatology journals and analyze their endorsement of reporting guidelines and clinical trial registration. Sixty rheumatology journals were selected by a research librarian and an investigator through the 2021 Scopus CiteScore tool. The instructions for authors' subsection of each journal was assessed to determine endorsement of study design-specific reporting guidelines or clinical trial registration. Descriptive statistics were calculated using R (version 4.2.1) and RStudio. Of the 58 journals analyzed, 34 (34/58; 59%) mentioned the EQUATOR Network: an online compendium of best practice reporting guidelines. The most commonly mentioned reporting guidelines were CONSORT with 44 journals (44/58; 75%), and PRISMA with 35 journals (35/58; 60%). The least mentioned guidelines were QUOROM with 56 journals not mentioning the guideline (56/58; 97%), and SRQR with 53 journals not mentioning the guideline (53/57, 93%). Clinical trial registration was required by 38 journals (38/58; 66%) and recommended by 8 journals (8/58; 14%). Our study found that endorsement of reporting guidelines and clinical trial registration within rheumatology journals was suboptimal with great room for improvement. Endorsement of reporting guidelines have shown to not only mitigate bias, but also improve research methodologies. Therefore, we recommend rheumatology journals broadly expand their endorsement of reporting guidelines and clinical trial registration to improve the quality of evidence they publish.