摘要：Researchers at the New York City (NYC) Department of Health and Mental Hygiene (DOHMH) analyzed trends in chief complaint (CC) word count from NYC emergency department (ED) data from 2008 - 2011 using change point analysis (CPA). CPA results were compared to known changes across the EDs. When CPA detected a significant change in CC word count, trends in syndrome count and syndrome breakdown into constituent symptoms were examined. A significant shift in CC word count may be indicative of a systematic change within an ED, which could affect the DOHMH's ability to categorize ED visits into syndromes.
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