Skip to main content

Displaying results 9 - 16 of 17
  • Data Quality

    Content Type: Use Case

    Problem Summary Data collection across a growing stream of contributing facilities and variables requires automated, consistent, and efficient monitoring of quality. Epidemiologists tasked with analyzing syndromic data need to be confident in the… read more
    … Seattle &King County (WA); Marion County (IN) Phone: 206-263-8154 (Seattle & King County) or 317-221-3362 … facility and jurisdictional level. Volume of patient visits and the severity of the missing variable to analytic … that can be provided to address the problem: Unique visit ID, Visit Date, Chief Complaint, Facility ID, Age, …
  • How Bad Is It? Using Biosurveillance Data to Monitor the Severity of Seasonal Flu

    Content Type: Abstract

    We sought to evaluate the validity of pneumonia and influenza hospitalizations (PI) data gathered by our biosurveillance system.
    … we collect include hospital name, date and time of visit, date of discharge, age, sex, home zip code, chief … was intubated or was in the ICU, and a patient and visit key. Data are transmitted daily, but due to delays in … by our biosurveillance system are captured daily for visits that occurred up to just one month earlier. We found …
  • Adopting a common influenza-like illness syndrome across multiple health jurisdictions

    Content Type: Abstract

    Syndromic surveillance systems were designed for early outbreak and bioterrorism event detection. As practical experience shaped development and implementation, these systems became more broadly used for general surveillance and situational… read more
    … historical data consisting of total and ILI-related daily visit counts by age group (B2, 2�4, 5�17, 18�44, 45�64 and … time-series, subsyndrome and age-specific distribution of visits and signal-to-noise measures. Results We found less … purpose) Fig. 1. Time-series of percent of total ED visits: locally preferred ILI (top) and common ILI (bottom) …
  • Classification of Emergency Department Syndromic Data for Seasonal Influenza Surveillance

    Content Type: Abstract

    We evaluated several classifications of emergency department (ED) syndromic data to ascertain best syndrome classifications for ILI.
    … with ED data. We used 6 classifications of ILI ED visit data for this analysis: (1) A chief complaint with …
  • What is the Value of a Positive Syndromic Surveillance Signal?

    Content Type: Abstract

    One criterion for evaluating the effectiveness of a surveillance system is the system’s positive predictive value. To our knowledge few studies have described the positive predictive value of syndromic surveillance signals… read more
    … departments (EDs) in King County. EDs send data on all visits that occurred the previous day. Aberrations in the … communicable disease reporting mechanisms (e.g., via phone or fax). A signal was classified as a true positive if …
  • The validity of emergency department influenza-like-illness (ILI) for laboratory-confirmed influenza in children

    Content Type: Abstract

    Syndromic surveillance systems use electronic health-related data to support near-real time disease surveillance. Over the last 10 years, the use of ILI syndromes defined from emergency department (ED) data has become an increasingly accepted… read more
    … time of study. Results We studied approximately 14,000 visits during the discrete year and 32,000 visits during concomitant years. Viral results were unavailable for approximately 75% of respiratory visits and multiple imputation was used to impute values. …
  • Systematic Comparison of Algorithms Used in Syndromic Surveillance

    Content Type: Abstract

    Varied approaches have been used by syndromic surveillance systems for aberration detection. However, the performance of these methods has been evaluated only across a small range of epidemic characteristics.   Objective… read more
    … syndromes having average daily counts of 2, 10, 35 and 50 visits per day. We then simulated epidemics by creating all …
  • 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
    … our syndromic surveillance system captured 16,982 ED visits. Most of the 169 ED patients with CO-related illness …