A Comprehensive Assessment of Deadly Mass Shootings, 1980-2018, United States

As deadly mass shootings constitute a pressing concern for Americans, the database was created to assess features and trends in all deadly mass shootings in America between 1980 and 2018. In these data, mass shootings encompass all incidents with four or more gunshot fatalities, not including the shooter, within 24 hours. Open source media reports as well as official police and court records were used to code and verify details of mass shooting incidents. The data include information on public deadly mass shooting incidents, as well as all the other deadly mass shootings that occurred over this period (e.g., those that happened in private spaces among family members, and those that occurred in public spaces but were part of another criminal event). In all, the database contains information on 719 incidents that occurred in both public and private spaces between 1980 and 2018.

鉴于致命的大规模枪击事件对美国民众构成紧迫的关切，该数据库旨在评估1980年至2018年美国所有致命大规模枪击事件的特征和趋势。在这些数据中，大规模枪击事件涵盖在24小时内发生且造成四名或以上枪击死亡事件（不包括枪手本人），事件范围包括开源媒体报道以及官方警方和法庭记录，用以编码和验证大规模枪击事件的详细信息。数据包括关于公共致命大规模枪击事件的信息，以及在此期间发生的所有其他致命大规模枪击事件（例如，发生在家庭成员之间的私人空间中的事件，以及在公共空间发生但作为另一犯罪事件一部分的事件）。总计，该数据库包含了1980年至2018年间在公共和私人空间发生的719起事件的相关信息。