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Displaying results 1 - 8 of 11
  • The Utility of Patient Chief Complaint and ICD 9 Classifiers for the Influenza Sub-Syndrome

    Content Type: Abstract

    In order to detect influenza outbreaks, the New York State Department of Health emergency department (ED) syndromic surveillance system uses patients’ chief complaint (CC) to assign visits to respiratory and fever syndromes… read more
    … the New York State (NYS) Department of Health emergency de- partment (ED) syndromic surveillance system uses … the false positives, we de- termined whether they were due to a correctable defi- ciency in the classifier. We … 23% (18%-28%) 60% (51%-69%) PPV CORRECTED (95% CIS) 31% (26%-36%) 79% (72%-86%) False positive CC were usually due to …
  • A System for Simulation: Introducing Outbreaks into Time Series Data

    Content Type: Abstract

    Objective Several authors have described ways to introduce artificial outbreaks into time series for the purpose of developing, testing, and evaluating the effectiveness and timeliness of anomaly detection algorithms, and more… read more
    … 1.5 and 2.0 (middle panels) and otherwise 1.75. These are all challenging choices. We added artificial outbreaks at spacing 57 days (top panels), 39 days (middle panels), and 57 and 22 days …
  • The Performance of Sub-Syndrome Chief Complaint Classifiers for the GI and RESP Syndromes

    Content Type: Abstract

    The Centers for Disease Control and Prevention BioSense has developed chief complaint (CC) and ICD9 sub syndrome classifiers for the major syndromes for early event detection and situational awareness. The prevalence of these sub… read more
    … 1.00 Pleurisy 0.22% 0.02 1.00 0.22 1.00 Resp Failure 0.26% 0.00 1.00 0.08 1.00 Table 2 – Gastrointestinal …
  • Variation in Visits Classified by GI ICD9 Biosurveillance Sub-Filters as a Function of Age

    Content Type: Abstract

    The CDC recently developed sub-syndromes for classifying disease to enhance syndromic surveillance of natural outbreaks and bioterrorism. They have developed ICD9 classifiers for six GI Illness subsyndromes: Abdominal Pain,… read more
    … we then calculated its count and its percent of all visits for each year of life. The Student’s t-test was … 5.0% at age 80. The 95% CI was less than +/- 0.3% in all cases. We did not attempt to characterize further … varied significantly by age. This may impact the de- sign of outbreak detection methods. The sub- syndromes …
  • ICD9 as a Surrogate for Chart Review in the Validation of a Chief Complaint Syndromic Surveillance System

    Content Type: Abstract

    The existing New York State Department of Health emergency department syndromic surveillance system has used patient’s chief complaint (CC) for assigning to six syndrome categories (Respiratory, Fever, Gastrointestinal, Neurological, Rash, Asthma… read more
    … sub-syndrome distributions were compared. Results Across all hospital systems, the 5 most common ED chief … c Fa lls D iz zi ne ss H em or rh ag e R as h C ou gh E de m a O tit is m ed ia P re gn an cy , ch ild bi rth , M al … 8/31/2006 0 5000 10000 15000 20000 25000 30000 M en ta l di so rd er s S pr ai ns a nd st ra in s A bd om in al pa in …
  • Investigating Syndromic Peaks Using Remotely Available Electronic Medical Records

    Content Type: Abstract

    One limitation of syndromic surveillance systems based on emergency department (ED) data is the time and expense to investigate peak signals, especially when that involves phone calls or visits to the hospital. Many EDs use electronic medical… read more
    … had complete data (388 cases). We found that visits for all peaks were classified easily into sub-syndromes. Except … A scan of the summary data revealed the excess was due to visits by children on a Sunday. Conclusion: The data … We speculate that the peak in pediatric fever visits was due to limited availability of pediatric services on a …
  • Sensitivity and Specificity of an Ngram Method for Classifying Emergency Department Visits into the Respiratory Syndrome in the Turkish Language

    Content Type: Abstract

    Previously we developed an “Ngram” classifier for syndromic surveillance of emergency department (ED) chief complaints (CC) in Turkish for bioterrorism. The classifier is developed from a set of ED visits for which both the ICD… read more
    … Setting: University hospital ED in Turkey. Participants: All ED visits for 2002. Protocol: We developed a respiratory … dichotomize the visits in or out of the RESP syndrome. We did the ROC analysis both with the original Turkish …
  • Performance of Sub-Syndrome Chief Complaint Classifiers for the GI Syndrome

    Content Type: Abstract

    The Centers for Disease Control and Prevention BioSense project has developed chief complaint (CC) and ICD9 sub-syndrome classifiers for the major syndromes for early event detection and situational awareness. This has the potential to… read more
    … weeks) episode that was possibly infectious in origin. We did not count the visit within a GI sub-syndrome if another …