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. 2022 Sep 6. Online ahead of print. doi: 10.1016/j.jen.2022.07.009

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© 2022 Emergency Nurses Association. Published by Elsevier Inc. All rights reserved.

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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(A) ALOS (ALOS = x): week 9, 2019 to week 8, 2021 target ALOS = 162 minutes. (B) SD length of stay (s): week 9, 2019 to week 8, 2021. ALOS, average length of stay; CL, center line; LCL, lower control limit; UCL, upper control limit