SaTScan
SatScan may be downloaded from its home page. Do so now, and
install it (that is, save the file install.exe to disk (probably the c:\temp
directory); double click on it, and take all the defaults; it should be
installed to the c:\program files\satscan directory. The executable is
called STSWin.exe).
Exercise: Concerned citizens in New Mexico suspected cancers of
the brain and central nervous system clustered near Los Alamos
National Laboratory. Information on the area is available from three
files:
(again, the files are provided with SaTScan: the links above allow you to
have a look at the files). Using these New Mexico data, analyze the
rates to determine
- whether there is spatial clustering;
- if there is spatial clustering, the locations of the clusters
significant at .05; and
- whether there is clustering near the coordinates (51, 39). For this
third analysis, you will need to create a Grid file (call it nm.grd). It consists of a single line reading `51.0
39.0'. Enter this file name for the `Special Grid File' on the Input file
tab.
- Specify the null spatial model in cases 1 and 3.
Notes:
- Use the Help! It includes lengthy descriptions of the statistics,
input formats, etc.
Website maintained by Andy Long.
Comments appreciated.