The spatial evaluation of neighborhood clusters of birth defects

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Spatial statistics have recently been applied in epidemiology to evaluate clusters of cancer and birth defects. Their use requires a comparison population, drawn from the population at risk for disease, that may not always be readily available. In this dissertation the plausibility of using data on all birth defects, available from birth defects registries, as a surrogate for the spatial distribution of all live births in the analysis of clusters is assessed. Three spatial statistics that have been applied in epidemiologic investigations of clusters, nearest neighbor distance, average interpoint distance, and average distance to a fixed point, were evaluated by ... continued below

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Pages: (179 p)

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Frisch, J.D. April 16, 1990.

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Description

Spatial statistics have recently been applied in epidemiology to evaluate clusters of cancer and birth defects. Their use requires a comparison population, drawn from the population at risk for disease, that may not always be readily available. In this dissertation the plausibility of using data on all birth defects, available from birth defects registries, as a surrogate for the spatial distribution of all live births in the analysis of clusters is assessed. Three spatial statistics that have been applied in epidemiologic investigations of clusters, nearest neighbor distance, average interpoint distance, and average distance to a fixed point, were evaluated by computer simulation for their properties in a unit square, and in a zip code region. Comparison of spatial distributions of live births and birth defects was performed by drawing samples of live births and birth defects from Santa Clara County, determining the street address at birth, geocoding this address and evaluating the resultant maps using various statistical techniques. The proposed method was then demonstrated on a previously confirmed cluster of oral cleft cases. All live births for the neighborhood were geocoded, as were all birth defects. Evaluation of this cluster using the nearest neighbor and average interpoint distance statistics was performed using randomization techniques with both the live births population and the birth defect population as comparison groups. 113 refs., 36 figs., 16 tabs.

Physical Description

Pages: (179 p)

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NTIS, PC A09/MF A01 - OSTI; GPO Dep.

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  • Other Information: Thesis (Ph.D.)

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  • Other: DE91001796
  • Report No.: LBL-29384
  • Grant Number: AC03-76SF00098
  • DOI: 10.2172/6519537 | External Link
  • Office of Scientific & Technical Information Report Number: 6519537
  • Archival Resource Key: ark:/67531/metadc1209045

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  • April 16, 1990

Added to The UNT Digital Library

  • July 5, 2018, 11:11 p.m.

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  • Oct. 30, 2018, 1:48 p.m.

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Frisch, J.D. The spatial evaluation of neighborhood clusters of birth defects, report, April 16, 1990; California. (digital.library.unt.edu/ark:/67531/metadc1209045/: accessed November 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.