Changes over time in characteristics, resource use and outcomes among ICU patients with COVID-19-A nationwide, observational study in Denmark.

"Assistance in database development: Ann Holm Hansen and Niels Jørgensen.Assistance in data registration: Lene Friholdt Mahler, Jens Leistner, Malina Christensen, Camilla Meno Kristensen, Ali Al‐Alak, Leah Lehmann, Anna Bonde Jakobsen, Nima Moradi, Caroline Bjerregaard, Niels Christian H Østerby, Mette Minedahl Jespersen, Cecilie Bauer, Reem Zaabalawi, Mohammed Daoud, Suhayb Ahmed Ibrahim Sheekh Abdi, Nick Meyer, Lene Lund Andersen, Johan Mikkelsen, Jeppe Jensen, Birte Najbjerg Nørby, Mikkel Zacharias Bystrup Holst‐Hansen, Boris Wied, Janne Schwab, Anders Hørby Rasmussen, Emil Arnerlöv and Mathilde Lykke. This study was supported by the Danish Clinical Quality Program (RKKP). The study was partly done within the framework of the COVID STEROID trial, which was funded by the Novo Nordisk Foundation and supported by Pfizer. None of the authors declared any other conflicts of interest."

"Funding information The Danish Clinical Quality Program (RKKP)"