Displaying results 1 - 5 of 5
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Implementation and Comparison of Preprocessing Methods for Biosurveillance Data
Content Type: Abstract
Modern biosurveillance relies on multiple sources of both prediagnostic and diagnostic data, updated daily, to discover disease outbreaks. Intrinsic to this effort are two assumptions: (1) the data being analyzed contain early indicators… read more… Cummulative Sum; DHS, Department of Homeland Security; DOE, Department of Energy; DOW, day-of-week; EARS, Early … are defined such that if the process remains in control, all (or nearly all) of the sample means will fall within the … independent and identically distributed (iid), with the dis- tribution generally assumed normal (although … -
The Development of Virtual Data for Syndromic Surveillance Exercises
Content Type: Abstract
On 27 April 2005, a simulated bioterrorist event—the aerosolized release of Francisella tularensis in the men’s room of luxury box seats at a sports stadium—was used to exercise the disease surveillance capability of the National Capital Region (NCR… read more… (NCR). The objective of this exercise was to permit all of the health departments in the NCR to exercise … as it both is proprietary and contains protected, though de-identified, health information about real people; nor is … (NCR). The ob- jective of this exercise was to permit all of the health departments in the NCR to exercise inter- … -
Preparing Biosurveillance Data for Classic Monitoring
Content Type: Abstract
Modern surveillance systems use statistical process control (SPC) charts such as Cumulative Sum and Exponentially Weighted Moving Average charts for monitoring daily counts of such quantities as ICD-9 codes from ED visits,… read more… of a CuSum chart to raw counts of cough medication sales (top) vs. to the preconditioned series using the different … results and additional evaluations were performed for all other series. The day-of-week effect is a major cause of … and, in some series, so is seasonality. Figure 1: Raw (top) and five preconditioned versions of daily cough … -
Data-Adapted Temporal Alerting Algorithms for Routine Health Monitoring
Content Type: Abstract
This paper discusses selection of temporal alerting algorithms for syndromic surveillance to achieve reliable detection performance based on statistical properties and the epidemiological context of the input data. We used quantities calculated from… read more… criteria for alert- ing. Most methods do not apply all four steps explic- itly. Control-chart-based methods … clus- tering of performance results by descriptors was dis- tinct. CONCLUSIONS From these results, simple data … streams.” Mor- bidity Mortality Weekly Report 2005 Aug 26;54 Suppl:55-62. Further Info.: Howard Burkom, … -
Automated Time Series Forecasting for Biosurveillance
Content Type: Abstract
The statistical process control (SPC) community has developed a wealth of robust, sensitive monitoring methods in the form of control charts [1]. Although such charts have been implemented for a wide variety of health monitoring purposes [2], some… read more… The mean-based criterion was less conclusive due to the effects of poor forecasts on a small number of …