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Showing 1 – 14 of 14 results.

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Lead by Example: The Effects of Police Supervisors on Officer Behavior, Dallas, Texas, 2014-2019 (ICPSR 39416)

Released/updated on: 2026-08-13

Time period: 2014-01-01--2019-12-31

This study measured the effects of police supervisors (sergeants) on subordinate officers' arrests. The investigator obtained public-record data from the Dallas Police Department (DPD) and Dallas District Attorney through public records requests, pursuant to the Texas Public Information Act (PIA). These data were used to estimate sergeant effects on arrest quality for both low-level and serious arrests, document variation in effects between sergeants, and analyze the correlation between sergeant scores on promotional exams and arrest quality pre- and post-exam. Special attention was also paid to the impact of arrestee race on arrest quality. The data included in this release are final, de-identified versions of the original data, and have been zipped as-is for release alongside relevant data cleaning and analysis syntax.

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Optimizing the Use of Video Technology to Improve Criminal Justice Outcomes, Milwaukee, WI, 2017-2018 (ICPSR 37683)

Released/updated on: 2022-02-28

Geographic coverage: Milwaukee, United States, Wisconsin

Time period: 2017-01-01--2018-10-31

The goal of this project was to analyze the collaboration between the Urban Institute and Milwaukee Police Department (MPD) to develop a plan to optimize MPD's public surveillance system. This was done through a process and impact evaluation of the MPD's strategy to improve operations, install new cameras, and integrate video analytic (VA) technologies centered around automatic license plate recognition (ALPR) and high-definition cameras connected to gunshot detection technology. The unit of analysis was two neighborhoods in Milwaukee, identified as "focus areas" by the researchers, where VA efforts were intensified. Additionally, all block groups within Milwaukee were included to measure crime before and after intervention, along with all intersections and block groups that received VA technologies against control groups. Variables include crimes based on date and location, along with whether or not locations had VA technologies. The following neighborhood demographic variables were included from the United States Census Bureau: resided in a different home, renters, under age eighteen, black residents, female headed households, public assistance recipients, below poverty line, unemployment, Hispanic residents, and foreign born.

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LAPD's TEAMS II: The Impact of a Police Integrity Early Intervention System, Los Angeles, California, 2000-2015 (ICPSR 36574)

Released/updated on: 2018-09-17

Geographic coverage: United States, Los Angeles, California

Time period: 2000-01-01--2015-12-31

These data are part of NACJD's Fast Track Release and are distributed as they were received from the data depositor. The files have been zipped by NACJD for release, but not checked or processed except for the removal of direct identifiers. Users should refer to the accompanying readme file for a brief description of the files available with this collection and consult the investigator(s) if further information is needed.

This research was an evaluation of the Los Angeles Police Department's (LAPD) Training Evaluation and Management System II (TEAMS II) Early Intervention System conducted by Justice and Security Strategies, Inc. TEAMS II was designed to identify officers at-risk for engaging in future problematic behavior. This system was mandated as part of the Consent Decree (Section II) that was formally entered into on June 15, 2001 between the U.S. Department of Justice and the LAPD. Justice and Security Strategies, Inc. research staff worked with the Information Technology Bureau to obtain and analyze TEAMS II data, conducted informal interviews with officers, sergeants, civilians, command staff, and technologists involved with TEAMS II, and worked with the TEAMS II contractors to examine and provide recommendations.

The data collection includes 3 Stata data files. The concentration analysis dataset (TEAMS-Concentration-Analysis-FINAL-v2.dta) with 143 variables for 15,710 cases, the regression-discontinuity dataset (TEAMS-Regression-Discontinuity-FINAL.dta) with 98 variables for 297,779 cases, and the time series dataset (TEAMS-Time-Series-FINAL.dta) with 43 variables for 192 cases. Demographic variables included as part of this data collection include officer age, gender, ethnicity, education level, and total number of officers employed by demographics.

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The Prevalence and Nature of Intra-and Inter-group Violence in an Era of Social and Demographic Change, 2000-2014 [UNITED STATES] (ICPSR 36677)

Released/updated on: 2017-12-08

Geographic coverage: United States

Time period: 2000-01-01--2014-12-31

This study used the National Incident-Based Reporting System (NIBRS) to explore whether changes in the 2000-2010 decade were associated with changes in the prevalence and nature of violence between and among Whites, Blacks, and Hispanics. This study also aimed to construct more accessible NIBRS cross-sectional and longitudinal databases containing race/ethnic-specific measures of violent victimization, offending, and arrest. Researchers used NIBRS extract files to examine the influence of recent social changes on violence for Whites, Blacks, and Hispanics, and used advanced imputation techniques to account for missing values on race/ethnic variables. Data for this study was also drawn from the National Historical Geographic Information System, the Census Gazetteer, and Law Enforcement Officers Killed or Assaulted (LEOKA).

The collection includes 1 Stata data file with 614 cases and 159 variables and 2 Stata syntax files.

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The Community Vulnerability and Responses to Drug-User-Related HIV/AIDS, 1990-2013 [96 Metropolitan Statistical Areas, United States] (ICPSR 36575)

Released/updated on: 2017-08-08

Geographic coverage: North Carolina, Milwaukee, Indiana, Ocean (New Jersey), Fort Worth, Cincinnati, Austin, Monmouth (New Jersey), Utah, San Jose, Rock Hill, Gastonia, San Diego, Columbus (Ohio), Syracuse, Springfield (Massachusetts), North Little Rock (Arkansas), Arizona, Las Vegas, Arlington, Springfield (Ohio), Boston, San Bernardino, Providence, Seattle, Kentucky, St. Petersburg, Bethlehem, Niagara Falls (New York), Nashville, California, Florida, Delaware, Hunterdon (New Jersey), Boca Raton (Florida), Troy, Knoxville, Mississippi, Fresno, New Haven, Sarasota, Illinois, Newark, Georgia, Little Rock, Virginia, Maryland, Norfolk, Virginia Beach, Suffolk County (New York), United States, Oklahoma, Grand Rapids, Louisville, Waukesha (Wisconsin), Arkansas, Washington, South Carolina, Albany (New York), Wichita, Mesa (Arizona), Carlisle (Pennsylvania), Fall River, Massachusetts, Missouri, Winston-Salem, Holland (Michigan), New Orleans, Scranton, Denver, Salt Lake City, Harrisburg, Dallas, St. Louis, Nevada, Schenectady, Allentown, Raleigh, San Antonio, Muskegon, St. Paul, Clearwater, Hawaii, Rochester (New York), Passaic, Ventura (California), Birmingham, Michigan, Lebanon, Baltimore, New Mexico, Orlando, Louisiana, Toledo, Middlesex (New Jersey), Philadelphia, Riverside, Oklahoma City, Akron, Greensboro, Detroit, Charlotte, High Point, Tucson, Albuquerque, Everett, Oakland, Bakersfield, New York City, Somerset (New Jersey), Petersburg, Memphis, Ogden, Jacksonville, Buffalo, Pittsburgh, Nassau (New York), Orange County (California), Sacramento, El Paso, Greenville, Kansas, Meriden, Pennsylvania, Tulsa, Chapel Hill (North Carolina), West Palm Beach, Iowa, Texas, Lorain, Portland (Oregon), Hazleton, Tampa, Durham, San Marcos (Texas), Indianapolis, Richmond, Oregon, Warwick, Bergen (New Jersey), Newport News, Ann Arbor, Alabama, Cleveland, Dayton, Nebraska, Omaha, Warren, West Virginia, Elyria, Tacoma, Minneapolis, Youngstown, Atlanta, Honolulu, Phoenix, Bradenton, Wilmington (Delaware), Gary, District of Columbia, Rhode Island, Vancouver (Washington), Lodi (California), Chicago, Fort Lauderdale, Wilkes-Barre, Minnesota, Kansas City (Missouri), Bellevue, New York (state), Anderson, New Jersey, Miami, San Francisco, Charleston (South Carolina), Jersey City, Long Beach, Spartanburg (South Carolina), New Hampshire, Easton, Ohio, Los Angeles, Hartford, Stockton, Houston

Time period: 1990-01-01--2013-12-31

The Community Vulnerability and Responses to Drug-User-Related HIV/AIDS, 1990-2013 [96 Metropolitan Statistical Areas, United States] study (CVAR) was a research study of why large United States Metropolitan Statistical Areas (MSAs) vary over time in their vulnerability to HIV/AIDS among drug users and in MSA responses to HIV/AIDS. This collection contains estimates of HIV prevalence among people who injected drugs (PWID) and among sub-populations of PWID. This collection is comprised of ten datasets with differing amounts of variables and provides trend data that describe the following:

Epidemiologic outcomes including population prevalence of PWIDs and Non-injecting drug users (NIDUs), and particularly their prevalence among youth; and, among PWIDs, HIV prevalence, late-diagnosis HIV cases, and AIDS incidence and mortality.
Implementation of evidence-based drug-related interventions including drug abuse treatment, syringe exchange, HIV counseling and testing.
Implementation of non-evidence-based drug-related interventions including incarceration and arrests of drug users.

The collection contains data on the MSA sub-populations including Black, Hispanic, White and "other" race categories. In addition, some statistics are presented in age range categories such as ages 15-29, 30-64 and 15-64.

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Forensic Evidence and Criminal Justice Outcomes in Sexual Assault Cases in Massachusetts, 2008-2012 (ICPSR 35205)

Released/updated on: 2017-03-30

Geographic coverage: Massachusetts

Time period: 2008-01-01--2012-12-31

This project had three goals. One, to provide a more detailed description of injury evidence and biological evidence in sexual assault cases, including their timing relative to arrests. A second goal was to examine the relationship of forensic evidence to arrests. A third goal was to examine injury evidence and biological evidence in certain types of cases in which it may have had greater impact. To achieve these goals, the researchers created analysis data files that merged data from the Massachusetts Provided Sexual Crime Report, forensic evidence data from the two crime laboratories serving the state and data on arrests and criminal charges from 140 different police agencies.

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Race and Drug Arrests: Specific Deterrence and Collateral Consequences, 1997-2009 (ICPSR 34313)

Released/updated on: 2016-02-29

Geographic coverage: United States

Time period: 1997-01-01--2009-12-31

This study examines several explanations for the observed racial/ethnic disparities in drug arrests, the consequences of drug arrest on subsequent drug offending and social bonding, and whether these consequences vary by race/ethnicity. The study is a secondary analysis of the National Longitudinal Survey of Youth 1997 (NLSY97).

Distributed here are the codes used for the secondary analysis and the code to compile the datasets. Please refer to the codebook appendix for instructions on how to obtain all the data used in this study.

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Case Outcomes Following Investigative Interviews of Suspected Victims of Child Sexual Abuse in Salt Lake City and County, Utah, 1994-2000 (ICPSR 27721)

Released/updated on: 2010-08-10

Geographic coverage: United States, Salt Lake City, Utah

Time period: 1994-01-01--2000-12-31

The purpose of this study was to examine whether the National Institute of Child Health and Human Development (NICHD) Investigative Interview Protocol impacted child sexual abuse case outcomes within the justice system. The researchers coded information from child protection and police reports, Children's Justice Center (CJC) intake forms, and the CJC electronic database to create a dataset on 1,280 alleged child sexual abuse cases involving children interviewed in Salt Lake County, Utah, between 1994 and 2000. Specifically, the research team gathered case characteristics and case outcomes data on 551 alleged child sexual abuse cases in which investigative interviews were conducted from 1994 to mid-September 1997 before the NICHD protocol was implemented, and 729 alleged child sexual abuse cases in which investigative interviews were conducted from mid-September 1997 to 2000 after the implementation of the NICHD protocol, so that pre-NICHD protocol and NICHD protocol interview case outcomes could be compared. The same police detectives conducted both the pre-NICHD protocol interviews and the NICHD protocol interviews. The dataset contains a total of 116 variables pertaining to cases of suspected child abuse. The major categories of variables include demographic data on the suspected child victim and on the suspected perpetrator, on case characteristics, on case outcomes, and on time delays.

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Minimum Legal Drinking Age and Crime in the United States, 1980-1987 (ICPSR 9685)

Released/updated on: 2006-03-30

Geographic coverage: United States

Time period: 1980-01-01--1987-12-31

This collection focuses on how changes in the legal drinking age affect the number of fatal motor vehicle accidents and crime rates. The principal investigators identified three areas of study. First, they looked at blood alcohol content of drivers involved in fatal accidents in relation to changes in the drinking age. Second, they looked at how arrest rates correlated with changes in the drinking age. Finally, they looked at the relationship between blood alcohol content and arrest rates. In this context, the investigators used the percentage of drivers killed in fatal automobile accidents who had positive blood alcohol content as an indicator of drinking in the population. Arrests were used as a measure of crime, and arrest rates per capita were used to create comparability across states and over time. Arrests for certain crimes as a proportion of all arrests were used for other analyses to compensate for trends that affect the probability of arrests in general. This collection contains three parts. Variables in the Federal Bureau of Investigation Crime Data file (Part 1) include the state and year to which the data apply, the type of crime, and the sex and age category of those arrested for crimes. A single arrest is the unit of analysis for this file. Information in the Population Data file (Part 2) includes population counts for the number of individuals within each of seven age categories, as well as the number in the total population. There is also a figure for the number of individuals covered by the reporting police agencies from which data were gathered. The individual is the unit of analysis. The Fatal Accident Data file (Part 3) includes six variables: the FIPS code for the state, year of accident, and the sex, age group, and blood alcohol content of the individual killed. The final variable in each record is a count of the number of drivers killed in fatal motor vehicle accidents for that state and year who fit into the given sex, age, and blood alcohol content grouping. A driver killed in a fatal accident is the unit of analysis.

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Drugs and Crime in Public Housing, 1986-1989: Los Angeles, Phoenix, and Washington, DC (ICPSR 6235)

Released/updated on: 2006-01-12

Geographic coverage: District of Columbia, United States, Phoenix, Los Angeles, California, Arizona

Time period: 1986-01-01--1989-12-31

This study investigates rates of serious crime for selected public housing developments in Washington, DC, Phoenix, Arizona, and Los Angeles, California, for the years 1986 to 1989. Offense rates in housing developments were compared to rates in nearby areas of private housing as well as to city-wide rates. In addition, the extent of law enforcement activity in housing developments as represented by arrests was considered and compared to arrest levels in other areas. This process allowed both intra-city and inter-city comparisons to be made. Variables cover study site, origin of data, year of event, offense codes, and location of event. Los Angeles files also include police division.

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Arrests As Communications to Criminals in St. Louis, 1970, 1972-1982 (ICPSR 9998)

Released/updated on: 2006-01-12

Geographic coverage: United States, Missouri, St. Louis

Time period: 1970-01-01--1970-12-31, 1972-01-01--1982-12-31

This data collection was designed to assess the deterrent effects over time of police sanctioning activity, specifically that of arrests. Arrest and crime report data were collected from the St. Louis Police Department and divided into two categories: all Uniform Crime Reporting Program Part I crime reports, including arrests, and Part I felony arrests. The police department also generated geographical "x" and "y" coordinates corresponding to the longitude and latitude where each crime and arrest took place. Part 1 of this collection contains data on all reports made to police regarding Part I felony crimes from 1970 to 1982 (excluding 1971). Parts 2-13 contain the yearly data that were concatenated into one file for Part 1. Variables in Parts 2-13 include offense code, census tract, police district, police area, city block, date of crime, time crime occurred, value of property taken, and "x" and "y" coordinates of crime and arrest locations. Part 14 contains data on all Part I felony arrests. Included is information on offense charged, the marital status, sex, and race of the person arrested, census tract of arrest, and "x" and "y" coordinates.

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Age Cohort Arrest Rates, 1970-1980 (ICPSR 8261)

Released/updated on: 2006-01-12

Geographic coverage: United States, Chicago, Tennessee, Tucson, California, Spokane, Washington, San Jose, Knoxville, Atlanta, Illinois, Colorado, Denver, Georgia, Arizona

Time period: 1970-01-01--1980-12-31

The data for this collection were gathered from the 1970 and 1980 Censuses and the Uniform Crime Reports for 1970 through 1980. The unit of analysis in this data collection is cities. Included are population totals by age group and arrest data for selected crimes by age group for Atlanta, Georgia, Chicago, Illinois, Denver, Colorado, Knoxville, Tennessee, San Jose, California, Spokane, Washington, and Tucson, Arizona. Population data by sex and age for all cities are contained in Part 4. The 123 variables provide data by age categories ranging from age 5 to age 69. Part 1, the arrest file for Atlanta and Chicago, provides arrest data for 1970 to 1980 by sex and age, ranging from age 10 and under to age 65 and over. The arrest data for other cities span two data files. Part 2 includes arrest data by sex for ages 15 to 24 for the years 1970 to 1980. Part 3 provides arrest data for ages 25 to 65 and over for the years 1970, 1975, and 1980. Arrest data are collected for the following crimes: murder, forcible rape, robbery, aggravated assault, burglary, larceny, motor vehicle theft, other assaults, arson, forgery, fraud, embezzlement, stolen property, vandalism, weapons, prostitution, other sex offenses, opium abuse, marijuana abuse, gambling, family offenses, drunk driving, liquor law violations, drunkenness, disorderly conduct, vagrancy, and all other offenses combined.

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Intimate Partner Homicide in California, 1987-2000 (ICPSR 3501)

Released/updated on: 2003-06-19

Geographic coverage: United States, California

Time period: 1987-01-01--2000-12-31

Since 1976, the United States has witnessed a steady and precipitous decline in intimate partner homicides. This study builds on the work of Dugan et al. (1999, 2000) and Browne and Williams (1989) by examining, in greater detail, the relationship between intimate partner homicide and gender, race, criminal justice system response, and domestic violence services. Specifically, the study examines the net effect of criminal justice system response and federally-funded domestic violence shelters on victimization of white, African American, and Hispanic males and females. This study used aggregated data from the 58 counties in California from 1987 to 2000. Homicide data were gathered by the State of California Department of Justice, Criminal Justice Statistics Center. Data on domestic violence resources were obtained from the Governor's Office of Criminal Justice Planning, Domestic Violence Branch, in the form of detailed reports from domestic violence shelters in the state. Based on these records, the researchers computed the number of federally-funded shelter-based organizations in a given county over time. Data on criminal justice responses at the county level were gathered from the State of California Department of Justice, Criminal Justice Statistics Center. These data included domestic violence arrests and any convictions and incarceration that followed those arrests. The researchers disaggregated these criminal justice system measures by race and gender. In order to account for population differences and changes over time, rates were computed per 100,000 adults (age 18 and older).

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Effects of Local Sanctions on Serious Criminal Offending in Cities with Populations Over 100,000, 1978-1983: [United States] (ICPSR 9590)

Released/updated on: 1998-02-23

Geographic coverage: United States

Time period: 1978-01-01--1983-12-31

These data assess the effects of the risk of local jail incarceration and of police aggressiveness in patrol style on rates of violent offending. The collection includes arrest rates for public order offenses, size of county jail populations, and numbers of new prison admissions as they relate to arrest rates for index (serious) crimes. Data were collected from seven sources for each city. CENSUS OF POPULATION AND HOUSING, 1980 [UNITED STATES]: SUMMARY TAPE FILE 1A (ICPSR 7941), provided county-level data on number of persons by race, age, and age by race, number of persons in households, and types of households within each county. CENSUS OF POPULATION AND HOUSING, 1980 [UNITED STATES]: SUMMARY TAPE FILE 3A (ICPSR 8071), measured at the city level, provided data on total population, race, age, marital status by sex, persons in household, number of households, housing, children, and families above and below the poverty level by race, employment by race, and income by race within each city. The Federal Bureau of Investigation (FBI) 1980 data provided variables on total offenses and offense rates per 100,000 persons for homicides, rapes, robbery, aggravated assault, burglary, larceny, motor vehicle offenses, and arson. Data from the FBI for 1980-1982, averaged per 100,000, provided variables for the above offenses by sex, age, and race, and the Uniform Crime Report arrest rates for index crimes within each city. The NATIONAL JAIL CENSUS for 1978 and 1983 (ICPSR 7737 and ICPSR 8203), aggregated to the county level, provided variables on jail capacity, number of inmates being held by sex, race, and status of inmate's case (awaiting trial, awaiting sentence, serving sentence, and technical violations), average daily jail populations, number of staff by full-time and part-time, number of volunteers, and number of correctional officers. The JUVENILE DETENTION AND CORRECTIONAL FACILITY CENSUS for 1979 and 1982-1983 (ICPSR 7846 and 8205), aggregated to the county level, provided data on the number of individuals being held by type of crime and sex, as well as age of juvenile offenders by sex, average daily prison population, and payroll and other expenditures for the institutions.