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Volume 21, Number 2—February 2015

Refining Historical Limits Method to Improve Disease Cluster Detection, New York City, New York, USA

Alison Levin-Rector1Comments to Author , Elisha L. Wilson2, Annie D. Fine, and Sharon K. Greene
Author affiliations: New York City Department of Health and Mental Hygiene, Queens, New York, USA

Main Article

Table 3

Geographic resolution of signals produced by HLMoriginal and HLMrefined in 12 weekly analyses, New York City, New York, USA, May 20–August 5, 2013*

Geographic area
≥3 Cases required for signal: No. signals produced by HLMoriginal
No. signals produced by HLMoriginal
No. signals produced by HLMrefined
City 14 14 8
Borough 40 40 26
UHF neighborhood 80 33 40
Total 134 87 74

*HLM, historical limits method; HLMoriginal, method as originally applied in NYC prior to May 20, 2013; HLMrefined, refined method applied starting May 20, 2013; UHF, United Hospital Fund.
†At neighborhood level, reviewer could require >3 cases for signal.

Main Article

1Current affiliation: RTI International, Research Triangle Park, North Carolina, USA.

2Current affiliation: Colorado Department of Public Health and Environment, Denver, Colorado, USA.

Page created: January 20, 2015
Page updated: January 20, 2015
Page reviewed: January 20, 2015
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.