Uniform Crime Reporting Program Data: Police Employee (LEOKA) Data, 2014

The Uniform Crime Reporting Program Data, Police Employee Data, 2014 file contains monthly data on felonious or accidental killings and assaults upon United States law enforcement officers acting in the line of duty. The Federal Bureau of Investigation (FBI) assembled the data and processed them from UCR Master Police Employee (LEOKA) data tapes.
Each agency record in the file includes the following summary variables: state code, population group code, geographic division, Metropolitan Statistical Area code, and agency name. These variables afford considerable flexibility in creating subsets or aggregations of the data.
Since 1930, the Federal Bureau of Investigation has compiled the Uniform Crime Reports (UCR) to serve as a periodic nationwide assessment of reported crimes not available elsewhere in the criminal justice system. Each year, this information is reported in four types of files: (1) Offenses Known and Clearances by Arrest, (2) Property Stolen and Recovered, (3) Supplementary Homicide Reports (SHR), and (4) Police Employee (LEOKA) Data. The Police Employee (LEOKA) Data provide information about law enforcement officers killed or assaulted (hence the acronym, LEOKA) in the line of duty. The variables created from the LEOKA forms provide in-depth information on the circumstances surrounding killings or assaults, including type of call answered, type of weapon used, and type of patrol the officers were on.

2014年统一犯罪报告计划警察雇员数据集（Uniform Crime Reporting Program Police Employee Data, 2014）收录了针对美国执勤执法人员的蓄意杀人、意外致死及袭击事件的月度统计数据。该数据集由联邦调查局（Federal Bureau of Investigation, FBI）从统一犯罪报告计划主控警察雇员（LEOKA）数据磁带中汇编并处理完成。

本文件中的各机构记录包含以下汇总变量：州代码、人口分组代码、地理分区、大都会统计区代码以及机构名称。上述变量可为数据的子集构建与聚合分析提供充分的灵活性。

自1930年起，联邦调查局便编制统一犯罪报告（Uniform Crime Reports, UCR），旨在为刑事司法系统提供其他渠道无法获取的周期性全国报案犯罪状况评估。每年该类信息以四类文件形式发布：(1) 已知犯罪与逮捕结案情况，(2) 被盗与追回财产，(3) 补充杀人报告（Supplementary Homicide Reports, SHR），(4) 警察雇员（执法人员遇袭与殉职，LEOKA）数据。其中，执法人员遇袭与殉职（LEOKA）数据记录了执勤期间执法人员遇袭或殉职的相关信息。基于LEOKA表格生成的变量可详尽呈现袭击或殉职事件的具体情境，包括接警类型、涉案武器类型以及警员执勤巡逻的类型。