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Space-time cluster analysis
2 messages · Joe Abrams, Virgilio Gomez Rubio
3 days later
Hi Joe,
I am using space-time cluster analysis to search for areas/times of high disease incidence. My data is aggregated by geographic areas with known background population numbers. So under the null hypothesis, the number of cases in a given location/time period is Poisson distributed, dependent on the number of person-years.
Some of the code in DCluster and spatclus may be adapted to detect clusters in space and time. I am planning to add a space-time version of the spatial scan statistic but there is no code at the moment. However, it should not be difficult to implement. Basically, you need to aggregate data over a temporal window and then perform a spatial test. Hope this helps. Virgilio