Uniform Crime Reporting Program Data: Police Employee (LEOKA) Data, 2010

The Uniform Crime Reporting Program Data, Police Employee Data, 2010 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 included 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.2010年版统一犯罪报告项目数据（Uniform Crime Reporting Program Data）——警务人员数据（Police Employee Data, LEOKA）文件，收录了美国执法人员在执行公务期间遭遇的蓄意杀人、过失杀人及袭击事件的月度统计数据。本数据集由美国联邦调查局（Federal Bureau of Investigation, FBI）从统一犯罪报告系统（UCR）警务人员主数据磁带中整理并处理得到。 文件中每条机构记录均包含以下汇总变量：州代码、人口分组代码、地理分区、都会统计区（Metropolitan Statistical Area）代码以及机构名称。这些变量为数据的子集创建与聚合分析提供了极强的灵活性。 自1930年起，美国联邦调查局便着手编制统一犯罪报告（Uniform Crime Reports, UCR），旨在为刑事司法体系提供此前无其他渠道可获取的、周期性全国范围已报案犯罪情况评估。每年，该类信息通过四类文件发布：(1) 已知犯罪与逮捕破案情况文件、(2) 被盗及追回财物文件、(3) 补充杀人案报告（Supplementary Homicide Reports, SHR）、(4) 警务人员（LEOKA）数据文件。警务人员（LEOKA）数据文件收录了执法人员在执行公务时遇害或遭受袭击的相关信息——LEOKA为“执法人员遇害或遇袭（Law Enforcement Officers Killed or Assaulted）”的首字母缩写。从LEOKA表单中提取的变量可提供遇害或遭袭事件的详细背景信息，包括接警类型、使用的武器类型以及警员执勤巡逻类型等。