Author: Thilo Reich; Marcin Budka
Title: A Proof Of Concept For A Syndromic Surveillance System Based On Routine Ambulance Records In The South-west Of England, For The Influenza Season 2016/17 Document date: 2018_11_9
ID: j3o0fko1_29
Snippet: The method was adapted in this study by using several different time frames compared to a solely weekly CR, furthermore it was applied to pyrexia numbers rather than specific influenza cases and thus will naturally include infections caused by other infectious agents. To allow to distinguish between different time frames used to calculate the modified CR in this study it is referred to as CR d where d represents the chosen time step between obser.....
Document: The method was adapted in this study by using several different time frames compared to a solely weekly CR, furthermore it was applied to pyrexia numbers rather than specific influenza cases and thus will naturally include infections caused by other infectious agents. To allow to distinguish between different time frames used to calculate the modified CR in this study it is referred to as CR d where d represents the chosen time step between observations in days. This means that the time step d must be chosen by the investigator to estimate CR d as follows:
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