Skip to main content

Displaying results 1 - 2 of 2
  • Content Type: Abstract

    Modern surveillance systems use statistical process control (SPC) charts such as Cumulative Sum and Exponentially Weighted Moving Average charts for monitoring daily counts of such quantities as ICD-9 codes from ED visits,… read more
    … daily counts of such quantities as ICD-9 codes from ED visits, sales of medications, and doctors’ office visits. The working assumption is that such pre-clinical … daily counts of such quantities as ICD-9 codes from ED visits, sales of medications, and doctors’ office visits. …
  • Content Type: Abstract

    Modern biosurveillance relies on multiple sources of both prediagnostic and diagnostic data, updated daily, to discover disease outbreaks. Intrinsic to this effort are two assumptions: (1) the data being analyzed contain early indicators… read more
    … data. Examples are daily counts of emergency room visits, over-the-counter (OTC) or prescription medication sales, school absences, doctors’ office visits, veterinary reports, or other data streams that could … E, Picard R, Umland E: Modeling emergency department visit patterns for infectious dis- ease complaints: results …