This data set provides the number of incident leukemia cases per census tract in an eight-county region of upstate New York in the period 1978-1982. In addition, the data set also includes information about the location of the census tracts, the population in 1980, the inverse of the distance to the nearest Trichloroethene (TCE) site, the percentage of people aged 65 or more, and the percentage of people who own their home.
The dataset also provides the locations of the TCE sites.
File NY8_clusters contains the results of running DetectClustersModel on a null model ('ny.m0') and another one with covariates ('ny.m1'). The results are in 'ny.cl0' and 'ny.cl1', respectively.
A SpatialPolygonsDataFrame with 281 polygons representing the census tracts, and the following information about each census tract:
|POP8||Population in 1980|
|TRACTCAS||Number of leukemia cases rounded to 2 decimals|
|PROPCAS||Ratio of the number of leukemia cases to the population in 1980|
|PCTOWNHOME||Proportion of people who own their home|
|PCTAGE65P||Proportion of people aged 65 or more|
|PEXPOSURE||Inverse of the distance to the nearest TCE site|
|Cases||Number of leukemia cases|
|Xm||x coordinate (in meters)|
|Ym||y coordinates(in meters)|
|Xshift||Shifted Xm coordinate|
|Yshift||Shifted Ym coordinate|
Waller and Gotway (2004) and Bivand et al. (2008)
Bivand, R.S., E. J. Pebesma and V. Gómez-Rubio (2008). Applied Spatial Data Analysis with R. Springer.
Waller, L., B. Turnbull, L. Clark, and P. Nasca (1992). Chronic disease surveillance and testing of clustering of disease and exposure: application to leukemia incidence in tce-contamined dumpsites in upstate New York. Environmetrics 3, 281-300
Waller, L. A. and C. A. Gotway (2004). Applied Spatial Statistics for Public Health Data. John Wiley & Sons, Hoboken, New Jersey. http://web1.sph.emory.edu/users/lwaller/WGindex.htm
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