Effect of spatial resolution on cluster detection: a simulation study

BACKGROUND: Aggregation of spatial data is intended to protect privacy, but some effects of aggregation on spatial methods have not yet been quantified. METHODS: We generated 3,000 spatial data sets and evaluated power of detection at 12 different levels of aggregation using the spatial scan statist...

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Detalles Bibliográficos
Autores principales: Ozonoff, Al, Jeffery, Caroline, Manjourides, Justin, White, Laura Forsberg, Pagano, Marcello
Formato: Texto
Lenguaje:English
Publicado: BioMed Central 2007
Materias:
Methodology
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2213641/
https://www.ncbi.nlm.nih.gov/pubmed/18042281
http://dx.doi.org/10.1186/1476-072X-6-52
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author Ozonoff, Al
Jeffery, Caroline
Manjourides, Justin
White, Laura Forsberg
Pagano, Marcello
author_facet Ozonoff, Al
Jeffery, Caroline
Manjourides, Justin
White, Laura Forsberg
Pagano, Marcello
author_sort Ozonoff, Al
collection PubMed
description BACKGROUND: Aggregation of spatial data is intended to protect privacy, but some effects of aggregation on spatial methods have not yet been quantified. METHODS: We generated 3,000 spatial data sets and evaluated power of detection at 12 different levels of aggregation using the spatial scan statistic implemented in SaTScan v6.0. RESULTS: Power to detect clusters decreased from nearly 100% when using exact locations to roughly 40% at the coarsest level of spatial resolution. CONCLUSION: Aggregation has the potential for obfuscation.
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spelling pubmed-22136412008-01-25 Effect of spatial resolution on cluster detection: a simulation study Ozonoff, Al Jeffery, Caroline Manjourides, Justin White, Laura Forsberg Pagano, Marcello Int J Health Geogr Methodology BACKGROUND: Aggregation of spatial data is intended to protect privacy, but some effects of aggregation on spatial methods have not yet been quantified. METHODS: We generated 3,000 spatial data sets and evaluated power of detection at 12 different levels of aggregation using the spatial scan statistic implemented in SaTScan v6.0. RESULTS: Power to detect clusters decreased from nearly 100% when using exact locations to roughly 40% at the coarsest level of spatial resolution. CONCLUSION: Aggregation has the potential for obfuscation. BioMed Central 2007-11-27 /pmc/articles/PMC2213641/ /pubmed/18042281 http://dx.doi.org/10.1186/1476-072X-6-52 Text en Copyright © 2007 Ozonoff et al; licensee BioMed Central Ltd. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( (http://creativecommons.org/licenses/by/2.0) ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Methodology
Ozonoff, Al
Jeffery, Caroline
Manjourides, Justin
White, Laura Forsberg
Pagano, Marcello
Effect of spatial resolution on cluster detection: a simulation study
title Effect of spatial resolution on cluster detection: a simulation study
title_full Effect of spatial resolution on cluster detection: a simulation study
title_fullStr Effect of spatial resolution on cluster detection: a simulation study
title_full_unstemmed Effect of spatial resolution on cluster detection: a simulation study
title_short Effect of spatial resolution on cluster detection: a simulation study
title_sort effect of spatial resolution on cluster detection: a simulation study
topic Methodology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2213641/
https://www.ncbi.nlm.nih.gov/pubmed/18042281
http://dx.doi.org/10.1186/1476-072X-6-52
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AT manjouridesjustin effectofspatialresolutiononclusterdetectionasimulationstudy
AT whitelauraforsberg effectofspatialresolutiononclusterdetectionasimulationstudy
AT paganomarcello effectofspatialresolutiononclusterdetectionasimulationstudy

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