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Displaying results 1 - 6 of 6
  • Content Type: Abstract

    SaTScan is a freely available software that uses the scan statistic to detect clusters in space, time or space-time. SaTScan uses Monte Carlo hypothesis testing in order to produce a p-value for the null hypothesis that no… read more
    … to gener- ate each p-value while still retaining enough preci- sion in the p-value to determine how unusual a clus- … Communications in Sta- tistics: Theory and Methods, 1997. 26: p. 1481-1496. [3] Gumbel, EJ, Statistics of Extremes. …
  • Content Type: Abstract

    National surveillance is used to detect the emergence and spread of influenza virus variants and to monitor influenza-related morbidity and mortality. Nurse telephone triage (“call”) data may serve as a useful complement to… read more
    … and mortality. Nurse telephone triage (“call”) data may serve as a useful complement to traditional influenza … on number of influenza isolates and percentage of total visits to sentinel providers for influenza-like illness were … [2] Henry JV, Magruder S, Snyder M. Comparison of office visit and nurse advice hotline data for syndromic …
  • Content Type: Abstract

    Influenza affects millions of people and causes about 36,000 deaths in the United States each winter. Pandemics of influenza emerge at irregular intervals. National influenza surveillance is used to detect the emergence and spread of influenza virus… read more
    … such data for influenza-like illness (ILI) surveillance may lead to earlier detection of ILI in the community, both … data on number of influenza isolates and percentage of visits for ILI from sentinel providers were com- pared to rolling, seven-day totals of calls for ILI and …
  • Content Type: Abstract

    We sought to compare ambulatory care (AC) and emergency department (ED) data for the detection of clusters of lower gastrointestinal illness, using AC and ED data and AC+ED data combined, from two geographically separate health plans participating… read more
    … For each data stream— AC, ED, and AC+ED combined—repeat visits were omitted if they occurred within 6 weeks of a previous visit to the same setting for LGI. Generalized linear mixed …
  • Content Type: Abstract

    Modern public health surveillance systems have great potential for improving public health. However, evaluating the performance of surveillance systems is challenging because examples of baseline disease distribution in the population are limited to… read more
    … seeking behavior and a surveillance system for outpatient visits. The resulting in silico surveil- lance data contain … specified surveillance system create a data stream of ILI visits. Outbreaks of influenza are artificially inserted … ehtj11115 ehtj11120 ehtj11024 ehtj11060 ehtj11110 26-50 ehtj11034 ehtj11198 ehtj11174 ehtj11048 ehtj11154 …
  • Content Type: Abstract

    Existing statistical methods can perform well in detecting simulated bioterrorism events. However, these methods have not been well-evaluated for detection of the type of respiratory and gastrointestinal events of greatest… read more
    … Demonstration Program [4] from June 2005 through May 2006. The program covers approximately 10% of the …