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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

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Table 2

Distribution of emergency department visits by hierarchical syndrome category (valid chief complaints)

Syndrome (in order of hierarchy) % all ages (n = 2,374,131*) % age 0–12 y (n = 556,065) % age 13–39 y, n = 946,478 % age 40–64 y, n = 604,707 % age >65, n = 259,615
Common cold 2.0 5.8 1.0 0.9 0.5
Sepsis/dead on arrival 0.5 0.2 0.2 0.6 1.8
Respiratory 8.0 13.3 4.4 6.7 11.9
Diarrhea 1.6 3.6 0.9 0.9 1.0
Fever 6.5 20.0 2.7 2.0 1.9
Rash 2.0 4.1 1.6 1.2 0.6
Asthma 3.3 4.9 2.6 3.3 1.9
Vomiting 2.7 4.7 2.3 1.7 2.1
Other 73.5 43.7 84.4 82.4 78.3

*Total number includes 7,266 visits for which patients' ages were unavailable

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