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I see that MIMIC-III's noteevents table contains a column ISERROR, which is a CHAR(1), but no explanation. What does ISERROR represent (i.e. what error are we talking about)?

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The Metavision workstation allows physicians to add notes relating to patients. These notes are created using template forms, which include a 'Set as Error' button as shown in the following screenshot (captured from the training notes highlighted below):

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A '1' in the ISERROR column of the noteevents table indicates that a physician has selected the 'Set as Error' button. An example of an error is where a note has been associated with the incorrect patient.

Training notes for the Metavision system with a brief discussion of the 'Set as Error' button are available at: http://portal.mah.harvard.edu/metavision_training/pnotes.asp (see slide 89/109)

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