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How to screen out the first ICU stay for a certain patient?
In the document of the "patient" table, it says "There is no systematic method for chronologically ordering patientHealthSystemStayID for the same patient within the same year." But when I asked AI how to screen out the first ICU stay for a certain patient, it said that the database assigns a new, larger patienthealthsystemstayid for each new hospital stay for the same patient in the same year. Is this true?