Blog Archives

Announcing the release of SpaceStat 3.6 and Jacquez’ Q, our new case-control method

Posted on by Susan Hinton

With our latest release, we’ve included support for our new Q-statistic, appropriately named Jacquez’ Q.  Q-statistics were developed for evaluating space-time clustering in residential histories of case-control data (Jacquez et al., 2006). Representing residential histories as space-time threads (those locations where people … Continue reading

The small numbers problem part 3: Diagnostics for the small numbers problem

Posted on by Geoffrey Jacquez, Ph.D.

To follow along with the analyses in this blog download and install a trial version of SpaceStat here. An earlier blog defined the small numbers problem and illustrated that rates calculated with small denominators (e.g. small at-risk populations) have high variance and … Continue reading