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Frequency and cumulative prevalence of ALI according to hospital day
Hospital day 0 refers to the ED. Frequency of ALI represents the development of new cases of ALI on an individual hospital day (e.g. 25 new cases of ALI development on hospital day 1). Cumulative prevalence of ALI represents the total number of ALI cases present on an individual hospital day, excluding those cases experiencing death.
ALI = acute lung injury
