Skip to main content

Displaying results 409 - 416 of 442
  • Synthesizing the American Health Information Community’s Minimum Data Set

    Content Type: Abstract

    One of the challenges facing developers and users of automated disease surveillance systems is being able to accurately evaluate the performance of their systems for the wide variety of public health threats that are possible. A… read more
    … represent- ing various types of outbreaks on top of that back- ground [3],[4]. With the introduction of the AHIC …
  • Bayesian Methods for Syndromic Surveillance

    Content Type: Abstract

    Syndromic surveillance needs to be (1) transparent, (2) actionable, and (3) flexible. Traditional frequentist approaches to syndromic surveillance, such as cusum charts and scan statistics, tend to fail on all three criteria. First, the validity of… read more
    … analogous way). The mean of the Poisson is the sum of the back- ground rate for time period t and the product of an …
  • 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
    … signals. Sensitivity values were recorded for practical back- ground alert rates to compare algorithm detection …
  • Reverse Engineering of a Syndrome Definition for Influenza

    Content Type: Abstract

    We report here on the use of the North Carolina Bioterrorism and Emerging Infection Prevention System (NC BEIPS, www.ncbeips.org) to reverse engineer a syndrome definition of influenza for the purpose of influenza surveillance.
    … identi- fication of many false positive records. Due to lack of recognition of negation terms (e.g. no headache vs. …
  • Spatio-Temporal Visualizations as Interface: Constructing Geographic Animations of Disease Surveillance Data in a Syndromic Surveillance System

    Content Type: Abstract

    As the Georgia Division of Public Health began constructing a systems interface for its syndromic surveillance program, the nature and intended use of these data inspired new approaches to interface design. With the temporal and spatial components… read more
    … of zip code color gradients found that often there is a lack of sufficient contrast between shaded regions to fully …
  • Impact of alternate diagnoses on the accuracy of influenza-like illness case definition used for H1N1 screening in the emergency department

    Content Type: Abstract

    In June 2009, the CDC defined a confirmed case of H1N1 as a person with an ILI and laboratory confirmed novel influenza A H1N1 virus infection. ILI is defined by the CDC as fever and cough and/or sore throat, in the absence of a known cause… read more
    … with alternate diag- noses can be difficult because of lack of available data, specifically lab results, which can …
  • The spatial-temporal pattern of excess influenza visits at the (sub-)urban scale

    Content Type: Abstract

    Quantifying the spatial-temporal diffusion of diseases such as seasonal influenza is difficult at the urban scale for a variety of reasons including the low specificity of the extant data, the heterogenous nature of healthcare seeking… read more
    … spatial relationships with demographic covariates. The lack of variation across flu periods suggests that spatial …
  • Utility of Syndromic Surveillance for Investigating Morbidity Resulting from a Severe Weather Event

    Content Type: Abstract

    On 12/14/06, a windstorm in western Washington caused 4 million residents to lose power; within 24 hours, a surge in patients presented to emergency departments (EDs) with carbon monoxide (CO) poisoning. As previously described, records of… read more
    … possibly resulting from ingestion of food spoiled by lack of refrigeration, were detected in the ED data but not …