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Displaying results 17 - 24 of 33
  • Development and Evaluation of a Data-adaptive Algorithm for Univariate Temporal Biosurveillance Data

    Content Type: Abstract

    Numerous recent papers have evaluated algorithms for biosurveillance anomaly detection. Common essential problems in the disparate, evolving data environment include trends, day-of-week effects, and other systematic behavior.… read more
    … of authentic outpatient data covering 1402 days of clinic visit counts. Receiver operating characteristic curves were … 2. Brillman JC, et.al. Modeling emergency department visit patterns for infectious disease complaints: results …
  • Modeling Disease Surveillance and Assessing its Effectiveness for Detection of Acute Respiratory Outbreaks in Resource-Limited Settings

    Content Type: Abstract

    A U.S. Department of Defense program is underway to assess health surveillance in resource-poor settings and to evaluate the Early Warning Outbreak Reporting System. This program has included several information-gathering trips,… read more
    … uses health and census data collected during the 2006 Lao visit and incorporates features of recently published agent- … Scenarios investigated were derived from the Lao site visit--the gain from adding EWORS capability in strategic …
  • A collaboration to enhance detection of disease outbreaks clustered by time of patient arrival

    Content Type: Abstract

    One objective of public health surveillance is detecting disease outbreaks by looking for changes in the disease occurrence, so that control measures can be implemented and the spread of disease minimized. For this purpose, the… read more
    … of Health, Bureau of Epidemiology, Tallahassee, FL, USA E-mail: howard.burkom@jhuapl.edu Objective This presentation … Results This method was tested and validated on ED visit count data covering over 6 years and aggregated at …
  • Modifications to Spatial Scan Statistics for Estimated Probabilities at Fine-Resolution in Highly Skewed Spatial Distributions

    Content Type: Abstract

    Estimation of representative spatial probabilities and expected counts from baseline data can cause problems in applying spatial scan statistics when observed events are sparse in a large percentage of the spatial zones (e.g.,… read more
    … this inves- tigation of alternatives. METHODS Counts of visits to Texas Department of Defense (DoD) clinics, grouped … the cho- sen syndrome groups from the Texas DoD clinic visit counts at the residence-zip code and home-zip code …
  • Another Type of Cluster Monitoring: Detection of Groups of Anomalous Patient Residence Locations

    Content Type: Abstract

    The Veterans Health Administration (VHA) uses the Electronic Surveillance System for the Early Notification of Community-based Epidemics to detect disease outbreaks and other health-related events earlier than other forms of surveillance. Although… read more
    … by ICD-9 code and chart review), date and location of visit and patients’ zip code of residence. We also accessed … study. Am J Crit Care. 2003;12:234�8. *Aaron Wendelboe E-mail: aaron-wendelboe@ouhsc.edu (page number not for …
  • Evaluation of Alerting Sparse-Data Streams of Population Healthcare-Seeking Data

    Content Type: Abstract

    Objective This presentation discusses the problem of detecting small-scale events in biosurveillance data that are relatively sparse in the sense that the median count of monitored time series values is zero. Research goals are to understand… read more
    … streams were small-scale series of 1400 days of daily visit counts in 20 syndromic categories. The simulated data …
  • Analytic Fusion for Essential Indicators of the Opioid Epidemic

    Content Type: Abstract

    Unlike other health threats of recent concern for which widespread mortality was hypothetical, the high fatality burden of opioid overdose crisis is present, steadily growing, and affecting young and old, rural and urban, military and civilian… read more
    … Traditional sources included emergency department (ED) visits and emergency management services (EMS) call records. … Traditional sources included emergency department (ED) visits and emergency management services (EMS) call records. …
  • A Pilot Study of Aberration Detection Algorithms with Simulated Data

    Content Type: Abstract

    To evaluate four algorithms with varying baseline periods and adjustment for day of week for anomaly detection in syndromic surveillance data.   read more
    … for detecting anomalies in daily emergency depart- ment visit data for 130 hospitals with 6 syndrome categories. …