Volume 21, Number 2—February 2015
Research
Refining Historical Limits Method to Improve Disease Cluster Detection, New York City, New York, USA
Table 3
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.
1Current affiliation: RTI International, Research Triangle Park, North Carolina, USA.
2Current affiliation: Colorado Department of Public Health and Environment, Denver, Colorado, USA.
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