Displaying results 913 - 920 of 1024
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Identifying Syndromic Fingerprints in Reason Fields in Emergency Department or Telehealth Records using N-grams for Similarity Analysis
Content Type: Abstract
An N-gram is a sub-sequence of n items from a given sequence where n can be 1, 2,…, n and the items can be letters or words. N-gram models are widely used in statistical natural language processing [3]. In the syndromic surveillance context, N-grams… read more… N-grams and their frequencies from a two year (2004-5) col- lection of classified ED and TH data. N-gram vectors … -
Modeling Clinician Detection Time of a Disease Outbreak Due to Inhalational Anthrax
Content Type: Abstract
We developed a probabilistic model of how clinicians are expected to detect a disease outbreak due to an outdoor release of anthrax spores, when the clinicians only have access to traditional clinical information (e.g., no computer-based alerts). We… read more… of the National Syndromic Surveil- lance Conference [CD-ROM]. Boston, MA: Fleetwood Multimedia, Inc.; 2004. Advances … -
Chief Complaint Preprocessing Evaluated on Statistical and Non-Statistical Classifiers
Content Type: Abstract
To determine whether preprocessing chief complaints before automatically classifying them into syndromic categories improves classification performance.… N. Dowling, MD, MS1, Debbie Travers, PhD, RN2, Gregory F. Coo- per, MD, PhD1, Wendy W. Chapman, PhD1 Department of … -
ROC Curves in Public Health Surveillance: A First Step in Cost-Benefit Analysis
Content Type: Abstract
Our purpose was to develop an ROC curve for public health surveillance similar to those used in diagnostic testing. We developed syndrome surveillance algorithms with differing sensitivity and specificity in detecting the seasonal influenza (ILI)… read more… was more specific for the ILI season. See Figure 1. We con- structed an ROC curve using increasing daily counts for … -
Self-Evaluation of an Electronic Disease Surveillance System Implemented in the Peruvian Army: Alerta JESAL
Content Type: Abstract
This paper describes the evaluation of an electronic disease surveillance system implemented in the Peruvian Army following the 2001 CDC surveillance evaluation guidelines.… M.D. 1; Yaneth Alvarez, R.N.2; Rollin Cruz, M.D. 2; COL Carlos Leturia, M.D. 2; MG Aldo Clavo2; CDR Joel M. … -
A Generalization of the AMOC Curve
Content Type: Abstract
The Activity Monitoring Operating Characteristic (AMOC) curve is a useful and popular method for assessing the performance of algorithms that detect outbreaks of disease [1]. As it is typically applied in biosurveillance, the AMOC curve plots the… read more… out- break on the ith case; each possible value of i is con- sidered. For various values of p, we derived the EWT … -
A New Space-Time Scan Statistic for Timely Outbreak Detection Taking Overdispersion Into Account
Content Type: Abstract
To propose a new space-time scan statistic taking overdispersion into account for accurate and timely detection of disease outbreaks.… of school childrens were 52,189. Baseline period was con- sidered to be from April to September 2006 and the … -
A Nonstatistical Algorithm for Automated Surveillance of Poison Control Center Data
Content Type: Abstract
To develop an automated system which examines Poison Control Center data and provides (1) early recognition of events, both man-made and naturally-occurring, which may pose a threat to public health, and (2) real-time notification to Poison… read more… RESULTS Currently data from one Poison Control Center (Con- necticut) are evaluated. Threshold values are set for …