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. 2021 Feb 26;286:296–300. doi: 10.1016/j.jad.2021.02.054

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© 2021 The Author(s)

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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Proportion of U.S. adults with anxiety in 2019 and throughout the COVID-19 pandemic in 2020.

Note: Estimates from 2019 are derived from the National Health Interview Survey (NHIS) (N = 30,915) and 2020 estimates are derived from the Understanding America Study (N = 8,022, observations = 121,768).