We request that any publications that come from these data sets cite the paper that originated this data set in their work.
Detailed information on mass public shootings from 1998 through November 2018
An Excel spreadsheet that lists all the mass public shootings over this time period is available here: Mass Public Shooting cases 1998 to May 2018.
“How a Botched Study Fooled the World About the U.S. Share of Mass Public Shootings: U.S. Rate is Lower than Global Average”
The paper is available to be downloaded here.
“Undocumented Immigrants, U.S. Citizens, and Convicted Criminals in Arizona,” by John R. Lott, Jr.
Documented information on attacks on gun-free zones (see here).
“Do White Police Officers Unfairly Target Black Suspects?” by John R. Lott, Jr. and Carlisle E. Moody
The paper is available here.
Data and do file can be downloaded here.
Australian Data on homicides and suicides from 1915 to 2014 is available here.
More Guns, Less Crime (3rd Ed., University of Chicago Press, 2010)
Most of this data involves STATA 7.0 data sets. The reason for using this is that the county level data involves a much larger set of control variables than can readily be handled by other statistical packages. To help with the variable names:
for the demographics
pp = percent of the population
n= neither black or white
1019= 10 to 19 years of age, etc
so ppbm1019 = percent of the population that is black male 10 to 19 years of age
rpcpi = real per capita personal income
rpcim = real per capita income maintenance (welfare type payments)
rpcui = real per capita unemployment insurance
rpcrpo = real per capita retirement gov payments (SS, medicare)
CCWage = age eligible to have a concealed handgun permit
assaultweaponsban2 = assault weapon ban, either state or federal
the crime data is the natural log of the crime rate (though .01 is added to the crime rate when it is equal to zero)
ao stands for the arrest rate data by type of crime
The data and its sources are described in the data appendix for my book More Guns, Less Crime (University of Chicago Press, 3rd edition, 2010).
More data sets can be obtained by clicking on the following links which will take you to the download page:
The data and “do” file for the original paper by Lott and Mustard, “Crime, Deterrence, and Right-to-Carry Concealed Handguns,” Journal of Legal Studies, Vol. 26, no. 1, January 1997: 1-68 is available here.
STATA data set: sendcounty1997.dta
Do file: simpleoldverification.do