Evaluation of Scan Methods Used in the Monitoring of Public Health Surveillance

Shannon Elizabeth Fraker

Abstract
With the recent increase in the threat of biological terrorism as well as the continual risk
of other diseases, the research in public health surveillance and disease monitoring has grown
tremendously. There is an abundance of data available in all sorts of forms. Hospitals, federal
and local governments, and industries are all collecting data and developing new methods to be
used in the detection of anomalies. Many of these methods are developed, applied to a real data
set, and incorporated into software. This research, however, takes a different view of the
evaluation of these methods.

Keywords: Anomaly detection, CUSUM charts, EWMA charts, RecurrenceInterval, Scan Method, Time-to-SignalCopyright 2007.

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