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. 2021 Aug 10;161(6):1758–1763. doi: 10.1053/j.gastro.2021.06.080

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© 2021 by the AGA Institute.

Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.

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Impact of the COVID-19 pandemic on clinical trials. (A) Overall impact of the COVID-19 pandemic on clinical trials. (B) Trends in enrollment rates. (C) Global overview of the average decline in enrollment rates by country compared to 2019. (D) Details on trial experience: overall, by study type and sub-analyses.