Evaluation of Heat-related Illness Surveillance Based on Chief Complaint Data from New Jersey Hospital Emergency Rooms
نویسندگان
چکیده
Methods Data on NJ hospital emergency room visits were evaluated using two data sources: 1) the EpiCenter syndromic surveillance system of emergency room visits; and 2) the Uniform Bill-Patient Summaries (UB) system containing diagnosis data on all hospital visits. Three years of data (2009-2011) were selected, for the time window of May 1 to September 30. The UB data used for matching with the EpiCenter data were limited to facilities participating in EpiCenter during the evaluation period. (EpiCenter facilities captured about 1/3 of all heat-related diagnoses in 2009, increasing to about 2/3 in 2011.) The ICD-9 codes of interest included 992.0-992.9 and external cause of injury codes E900.0 and E900.9. We evaluated the sensitivity and positive predictive value (PPV) of the EpiCenter algorithm in relation to the patients’ eventual diagnoses coded in the UB data.
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