A dataset of homicide rates across 9 states from 1994 to 2008. Missouri repealed its permit-to-purchase (PTP) law in 2007.
Details
- state
the name of the state; states present include Arkansas, Illinois, Iowa, Kansas, Kentucky, Missouri, Nebraska, Oklahoma, and Tennessee.
- year
the year of each observation. Years range from 1994 to 2008.
- deaths
the number of homicide deaths in the corresponding state in the corresponding year.
- crude_rate
the homicide rate in the corresponding state in the corresponding year.
- age_adj_rate
the age-adjusted homicide rate in the corresponding state in the corresponding year.
- group
whether each observation belongs to the "to-be-treated" group; 1 for Missouri and 0 for all other states.
- treat
whether each observation is treated; 1 for Missouri in 2008 and 0 otherwise.