Duplication and nonregistration of COVID-19 systematic reviews: Bibliometric review.
Jack A HelliwellJoe ThompsonNeil SmartDavid G JayneStephen J ChapmanPublished in: Health science reports (2022)
Systematic reviews during the early stages of the COVID-19 pandemic were uncommonly registered, frequently duplicated, and mostly of low methodological quality. In contrast, the reporting quality of manuscripts was generally good but varied substantially across published reports. There is a need for heightened stewardship of systematic review research, particularly during times of medical crisis where the generation of primary evidence may be rapid and unstable.