Law Enforcement Management and Administrative Statistics (LEMAS), 2013

The Law Enforcement Management and Administrative Statistics (LEMAS) survey collects data from a nationally representative sample of state and local law enforcement agencies in the United States. Although the data collection instrument (see page 150 of the codebook) uses the year 2012 for the title, most questions have a reference date of January 1, 2013. For this reason, the study title uses the year 2013. The 2013 LEMAS sample design called for the survey questionnaire to be sent to 3,336 general purpose state and local law enforcement agencies including 2,353 local police departments, 933 sheriffs' offices, and the 50 primary state law enforcement agencies. The design called for all agencies employing 100 or sworn personnel to be included with certainty (self-representing) and for smaller agencies to be sampled from strata base on number of officers employed. A total of 26 local police departments were determined to be out-of-scope for the survey because they were closed, outsourced, or operating on a part-time basis. A total of 38 sheriffs' offices were excluded from the survey because they had no primary law enforcement jurisdiction. The final mailout total of 3,272 agencies included 2,327 local police departments, 895 sheriffs' offices, and the 50 state agencies.

《执法管理与行政统计（LEMAS）调查》采集了来自美国全国代表性的州及地方执法机构的数据。尽管数据收集工具（见手册第150页）的标题使用的是2012年，但大多数问题的参考日期为2013年1月1日。因此，本研究标题采用了2013年。2013年的LEMAS样本设计要求调查问卷发送至3,336个通用目的的州及地方执法机构，包括2,353个地方警察局、933个郡治安官办公室以及50个主要的州执法机构。设计要求所有拥有100名或以上在编人员的机构必须确定性地包含在内（自我代表），而对于规模较小的机构，则基于雇佣的警力数量进行分层抽样。共有26个地方警察局因关闭、外包或兼职运营而被确定为调查范围之外。共有38个郡治安官办公室因没有主要执法管辖权而被排除在调查之外。最终的邮寄总数为3,272个机构，包括2,327个地方警察局、895个郡治安官办公室以及50个州机构。