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Volume 10, Number 5—May 2004

Research

Syndromic Surveillance in Public Health Practice, New York City

Richard Heffernan*, Farzad Mostashari*, Debjani Das*, Adam Karpati*, Martin Kulldorff†, and Don Weiss*Comments to Author 
Author affiliations: *New York City Department of Health and Mental Hygiene, New York, New York, USA; and; †Harvard Medical School and Harvard Pilgrim Health Care, Boston, Massachusetts, USA

Main Article

Table 3

Summary of signals based on the temporal and spatial scan statistics, (p<0.01) November 15, 2001–November 14, 2002

Analysis/syndrome No. signals Mean observed/expected cases in cluster Mean relative risk Mean excess cases in cluster
Citywide temporal analysis
  Respiratory (age >13 y)
     1-day 1 283/224 1.3 59
     2-day 8 770/673 1.1 96
     3-day 13 1,107/984 1.1 123
  Fever (age >13 y)
     1-day 3 225/166 1.4 59
     2-day 6 418/332 1.3 85
     3-day 13 591/497 1.2 94
  Diarrhea
     1-day 3 129/83 1.6 46
     2-day 6 283/219 1.3 64
     3-day 9 423/349 1.2 73
  Vomiting
     1-day 6 232/175 1.3 58
     2-day 6 448/359 1.2 88
     3-day 12 741/635 1.2 106
Hospital spatial analysis
  Respiratory (age >13 y) 11 71/44 1.6 27
  Fever (age >13 y) 14 32/16 2.0 16
  Diarrhea 17 26/12 2.2 14
  Vomiting 17 38/20 1.9 18
Zip code spatial analysis
  Respiratory (age >13 y) 4 56/33 1.7 23
  Fever (age >13 y) 14 18/6 3.0 12
  Diarrhea 10 17/6 2.8 11
  Vomiting 11 23/9 2.6 14

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