Evaluation of Temporal Aberration Detection Methods in New York City Syndromic Data

How to Cite

Mathes, R., Lall, R., & Sell, J. (2014). Evaluation of Temporal Aberration Detection Methods in New York City Syndromic Data. Online Journal of Public Health Informatics, 6(1). https://doi.org/10.5210/ojphi.v6i1.5101


The New York City (NYC) syndromic surveillance system has been monitoring syndromes from city emergency department (ED) visits for over a decade. We applied four aberration detection methodologies to a time series of ED visits in NYC spiked with synthetic outbreaks. Among the methods tested, performance varied by outbreak type and size; sudden large one-day spikes in cases were the most commonly detected, although sensitivity was low.  The methods tested did not perform well; variability in method performance by outbreak type suggests multiple methods may be ideal for detecting different outbreak features.
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