Answered By: Kathryn Ray Last Updated: Sep 06, 2019 Views: 5
The is no one definition of "mass" shooting, so be careful in your research.
Take a look at these sources:
Stanford University Library's Mass Shootings in America (MSA) The Stanford MSA is a data aggregation effort. It is a curated set of spatial and temporal data about mass shootings in America, taken from online media sources. It is an attempt to facilitate research on gun violence in the US by making raw data more accessible.
Washington Post Analysis. The Post's relational database allows user to search for details of a shooting or refine searches based on number of fatalities or injuries.
National Violent Death Reporting Service The CDC's NVDRS is an incident-based system, which can link deaths of the same violent event to help identify the circumstances of multiple homicides (such as mass shootings) or homicides followed by suicides.