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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 V2

Version Title: View help for Version Title V2

Name	File Type	Size	Last Modified
AUGUST-2022-UPDATE			08/02/2022 01:07: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
gstat_1519queen_051222.csv	text/csv	13.9 MB	05/31/2022 06:30: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], 2022-08-02. https://doi.org/10.3886/E170541V2

Project Description

Summary: Local Getis-Ord Gi* statistics were calculated as a measure of residential racial segregation. Measures were calculated at the census tract level on the proportion of non-Hispanic White, non-Hispanic Black, non-Hispanic Asian [and Pacific Islander for 1990 and 2000 census], and Hispanic persons 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, and for the minority of tracts that fell outside the boundaries of a CBSA, the County was used as the larger unit.

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, 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: racial segregation; residential segregation; neighborhoods

Geographic Coverage: Census tract

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): census/enumeration data; geographic information system (GIS) data

Methodology

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: Census tract

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Published Versions

V3 [2022-12-14]

V2 [2022-08-02]

V1 [2022-05-31]

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