Some studies have examined survival trends among critically ill COVID-19 patients, but most were case reports, small cohorts, and had relatively short follow-up periods. We aimed to examine the survival trend among critically ill COVID-19 patients during the first two and a half years of the pandemic and investigate potential predictors across different variants of concern periods.

中文翻译：

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瑞典 COVID-19 重症患者在大流行的前两年半期间的生存情况。


一些研究考察了重症 COVID-19 患者的生存趋势，但大多数是病例报告、小队列，且随访期相对较短。我们的目的是研究大流行的头两年半期间重症 COVID-19 患者的生存趋势，并调查不同关注时期的潜在预测因素。