Volume 8, Number 8—August 2002
Use of Automated Ambulatory-Care Encounter Records for Detection of Acute Illness Clusters, Including Potential Bioterrorism Events
|Population center||Census tract code||Cases in tract||Denominator in this tract||No. of days between counts this extremeb|
aNo census tract had an unusual number of new lower respiratory syndrome episodes on that day. The five most extreme tracts are shown, plus all with counts not expected to occur more than once per month. Tracts with most extreme counts are compared with their own history.
bEstimated number of days between counts this extreme in any of the 529 census tracts, when data are adjusted for this tract's unique characteristics, as well as month, day of week, holidays, and secular trend.