Disproportionate link between Circle K convenience stores and crime in Phoenix suburbs

While I think that the "analysis of why" could have been more rigorous statistically and otherwise, the study A multi-city report on crime & disorder in convenience stores by the Arizona State University Center for Violence Prevention and Community Safety is interesting. See "ASU study: Circle Ks draw more police calls" from the Arizona Republic.

I think they should have looked at the locations in terms of traffic and more detailed geographically and statistical analysis, along the lines of the work by Dennis Gorman of the Texas A&M School of Rural Public Health.

Many years ago I saw a newspaper report of a local community's "revenue" from Walmart being overshadowed by the cost of providing police service to the Walmart, but I can't find the article... That would be an interesting thing to study, wouldn't it?