Do reporting guidelines have an impact? Empirical assessment of changes in reporting before and after the PRISMA extension statement for network meta-analysis

作者：Areti Angeliki Veroniki, Sofia Tsokani, Stella Zevgiti, Irene Pagkalidou, Katerina‐Maria Kontouli, Pınar AMBARCIOĞLU, Nikos Pandis, Carole Lunny, Adriani Nikolakopoulou, Theodoros Papakonstantinou, Anna Chaimani, Sharon E. Straus, Brian Hutton, Andrea C. Tricco, Dimitris Mavridis, Georgia Salanti · 发表于：Systematic Reviews · 年份：2021 · DOI：10.1186/s13643-021-01780-9 · 被引用次数：54 · 研究领域：Meta-analysis and systematic reviews、scientometrics and bibliometrics research、Academic Publishing and Open Access

BACKGROUND: The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) extension statement for network meta-analysis (NMA) published in 2015 promotes comprehensive reporting in published systematic reviews with NMA. PRISMA-NMA includes 32 items: 27 core items as indicated in the 2009 PRISMA Statement and five items specific to the reporting of NMAs. Although NMA reporting is improving, it is unclear whether PRISMA-NMA has accelerated this improvement. We aimed to investigate the impact of PRISMA-NMA and highlight key items that require attention and improvement. METHODS: We updated our previous collection of NMAs with articles published between April 2015 and July 2018. We assessed the completeness of reporting for each NMA, including main manuscript and online supplements, using the PRISMA-NMA checklist. The PRISMA-NMA checklist originally includes 32 total items (i.e. a 32-point scale original PRISMA-NMA score). We also prepared a modified version of the PRISMA-NMA checklist with 49 items to evaluate separately at a more granular level all multiple-content items (i.e. a 49-point scale modified PRISMA-NMA score). We compared average reporting scores of articles published until and after 2015. RESULTS: In the 1144 included NMAs the mean modified PRISMA-NMA score was 32.1 (95% CI 31.8-32.4) of a possible 49-excellence-score. For 1-year increase, the mean modified score increased by 0.96 (95% CI 0.32 to 1.59) for 389 NMAs published until 2015 and by 0.53 (9...