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date: 04 March 2021

Census Tract 

A Dictionary of Epidemiology

Miquel Porta

An area for which details of population structure are separately tabulated at a periodic census; normally it is the smallest unit of analysis of census tabulations. Census tracts are chosen because they have well-defined boundaries, sometimes the same as local political jurisdictions, sometimes defined by conspicuous geographical features such as main roads or rivers. In urban areas census tracts may be further subdivided (e.g., into city blocks), but published tables do not contain details to this level. Census tracts are usually relatively homogeneous in demographic, socioeconomic, and ethnic composition.... ...

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