National Getis-Ord Gi* statistics for select populations; 1990-2019

Principal Investigator(s):  View help for Principal Investigator(s) Cyanna McGowan, Northwestern University. Feinberg School of Medicine; Antonio Nanni, Northwestern University; Kelsey Rydland, Northwestern University; Ember McCoy, University of Michigan; Haley Mullen, University of Michigan; Kiarri Kershaw, Northwestern University. Feinberg School of Medicine

Version:  View help for Version V3

Name File Type Size Last Modified
  AUGUST-2022-UPDATE 08/02/2022 01:07:PM
  Immigrant-Segregation 12/14/2022 01:19:PM
Gstat Documentation_2022.docx application/vnd.openxmlformats-officedocument.wordprocessingml.document 23.3 KB 05/31/2022 07:57:AM
Gstat Documentation_AUGUST2022.docx application/vnd.openxmlformats-officedocument.wordprocessingml.document 24.6 KB 08/02/2022 09:09:AM
gstat_00queen_051222.csv text/csv 14.9 MB 05/31/2022 06:30:AM
gstat_00rook_051222.csv text/csv 14.3 MB 05/31/2022 06:22:AM
gstat_0610queen_051222.csv text/csv 14.5 MB 05/31/2022 07:49:AM
gstat_0610rook_051222.csv text/csv 14.5 MB 05/31/2022 06:22:AM
gstat_1014queen_051222.csv text/csv 14.6 MB 05/31/2022 06:29:AM
gstat_1014rook_051222.csv text/csv 14.6 MB 05/31/2022 06:22:AM

Project Citation: 

McGowan, Cyanna, Nanni, Antonio, Rydland, Kelsey, McCoy, Ember, Mullen, Haley, and Kershaw, Kiarri . National Getis-Ord Gi* statistics for select populations; 1990-2019. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2022-12-14. https://doi.org/10.3886/E170541V3

Project Description

Summary:  View help for Summary Local Getis-Ord Gi* statistics were calculated as a measure of residential segregation. Measures were calculated at the census tract level based on the proportion of non-Hispanic White, non-Hispanic Black, non-Hispanic Asian [and Pacific Islander for 1990 and 2000 census], Hispanic, and immigrant persons (regardless of country of origin; 2008-2012 only) per census tract. Gi* statistics are Z-scores that compare the proportion of the population in the focal tract and its neighboring tracts to the average proportion of a larger geographic unit. For the majority of tracts, the larger geographic unit was the Core-Based Statistical Area (CBSA) these tracts belonged to. The county was used as the larger unit for tracts that fell outside the boundaries of a CBSA.

Data for the measures were obtained from the IPUMS National Historical Geographic Information System (NHGIS) data finder. Data were downloaded for the 1990 and 2000 census, and the 2006-2009, 2008-2012 (Immigrant segregation only), 2010-2014, and 2015-2019 5-year American Community Survey (ACS) estimates. Geographically standardized time series tables were used for 1990 and 2000 census data. All other ACS data were standardized to 2010 census tract boundaries.

G*statistics were calculated using both Rook and Queen conceptualization of spatial relationships. With Rook contiguity, neighbors are determined by those that share a common edge only, while Queen contiguity neighbors are those that share both an edge or a "corner" (common vertex). See detailed documentation for further details.

Scope of Project

Subject Terms:  View help for Subject Terms racial segregation; residential segregation; neighborhoods
Geographic Coverage:  View help for Geographic Coverage Census tract
Universe:  View help for Universe Proportion of persons non-Hispanic White, non-Hispanic Black, non-Hispanic Asian and Pacific Islander, and Hispanic in 1990. 
Proportion of persons non-Hispanic White, non-Hispanic Black, non-Hispanic Asian and Pacific Islander, and Hispanic in 2000. 
Proportion of persons non-Hispanic White, non-Hispanic Black, non-Hispanic Asian, and Hispanic; 2006-2009 5-year ACS estimates. 
Proportion of persons non-Hispanic White, non-Hispanic Black, non-Hispanic Asian, and Hispanic; 2010-2014 5-year ACS estimates.
Proportion of persons non-Hispanic White, non-Hispanic Black, non-Hispanic Asian, and Hispanic; 2015-2019 5-year ACS estimates. 
Data Type(s):  View help for Data Type(s) census/enumeration data; geographic information system (GIS) data

Methodology

Data Source:  View help for Data Source 1990 census derived from US Census Bureau summary tape file 1
2000 census derived from US Census Bureau summary file 1b
2010 American Community Survey: 5-Year Data 
2014 American Community Survey: 5-Year Data 
2019 American Community Survey: 5-Year Data 
Geographic Unit:  View help for Geographic Unit Census tract

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Published Versions

V3 [2022-12-14]

V2 [2022-08-02]

V1 [2022-05-31]

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