This dataset reflects reported incidents of crime (with the exception of murders where data exists for each victim) that occurred in the City of Chicago from 2001 to present, minus the most recent seven days. Data is extracted from the Chicago Police Department's CLEAR (Citizen Law Enforcement Analysis and Reporting) system. In order to protect the privacy of crime victims, addresses are shown at the block level only and specific locations are not identified. Should you have questions about this dataset, you may contact the Research & Development Division of the Chicago Police Department at 312.745.6071 or RandD@chicagopolice.org. Disclaimer: These crimes may be based upon preliminary information supplied to the Police Department by the reporting parties that have not been verified. The preliminary crime classifications may be changed at a later date based upon additional investigation and there is always the possibility of mechanical or human error. Therefore, the Chicago Police Department does not guarantee (either expressed or implied) the accuracy, completeness, timeliness, or correct sequencing of the information and the information should not be used for comparison purposes over time. The Chicago Police Department will not be responsible for any error or omission, or for the use of, or the results obtained from the use of this information. All data visualizations on maps should be considered approximate and attempts to derive specific addresses are strictly prohibited. The Chicago Police Department is not responsible for the content of any off-site pages that are referenced by or that reference this web page other than an official City of Chicago or Chicago Police Department web page. The user specifically acknowledges that the Chicago Police Department is not responsible for any defamatory, offensive, misleading, or illegal conduct of other users, links, or third parties and that the risk of injury from the foregoing rests entirely with the user. The unauthorized use of the words "Chicago Police Department," "Chicago Police," or any colorable imitation of these words or the unauthorized use of the Chicago Police Department logo is unlawful. This web page does not, in any way, authorize such use. Data is updated daily Tuesday through Sunday. The dataset contains more than 65,000 records/rows of data and cannot be viewed in full in Microsoft Excel. Therefore, when downloading the file, select CSV from the Export menu. Open the file in an ASCII text editor, such as Wordpad, to view and search. To access a list of Chicago Police Department - Illinois Uniform Crime Reporting (IUCR) codes, go to http://data.cityofchicago.org/Public-Safety/Chicago-Police-Department-Illinois-Uniform-Crime-R/c7ck-438e

Abstract (en): 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 study applied an experimental design to examine the crime and short- and long-term community impact of different hot spots policing approaches in 71 residential crime hot spots in St Louis County, MO. Hot spots were selected using Part I and Part II incidents in the year preceding the study (2011). The design contrasted a traditional enforcement-oriented hot spots approach versus place-based problem solving responses expected to change the routine activities of places over the long term. Twenty hot spots were randomly assigned to collaborative problem solving, while 20 were randomly assigned to directed patrol. Thirty-one randomly assigned hot spots received standard police practices. The treatment lasted five months (June-October, 2012). In order to assess community impact, researchers conducted 2,851 surveys of hot spots residents over three time points: March-May, 2012, at baseline; November 2012-January 2013, immediately following treatment; and May-July 2013, six to nine months after treatment concluded. In addition to collecting data on the crime and community effects, the study also collected data on the time officers spent in hot spots and the activities performed while on directed patrol. Officers were surveyed to learn their views about implementing hot spots policing. The purpose of this project was to conduct an experiment to study how a collaborative problem solving approach (PS) versus directed patrol (DP) versus standard policing practices (SPP) (the control group) differently impact crime in hot spots, but more importantly how the varied strategies impact residents' opinions about police, their neighborhoods, and their willingness to exert collective efficacy. Seventy-one hot spots were chosen by identifying crime incidents between December 2010 and November 2011 using kernel density with Robert Cross and Getis Ord GI* and then assessing counts at street segments to identify crime concentrations in residential areas. A random number generator was used to randomly assign treatment status as problem solving approach or directed patrol to 40 hot spots, while the remaining 31 sites were designated as controls.

Twenty-two officers were assigned to the 20 problem solving (PS) sites for the 5-month treatment period and received training in the Scanning, Analysis, Response, and Evaluation (SARA) method of problem solving. Officers involved in this treatment submitted a written update and met monthly with the PI to discuss progress and adjust course. Paid observers documented activities twice per PS hot spot.

The objective for the direct patrol (DP) portion of the study was to double the time spent by officers at each hot spot, averaging around 4.5 hours weekly. Officers involved were presented with a memorandum about the study and the PI and project consultant rode along with officers during the first two weeks of the treatment. Automated vehicle location (AVL) data was used to assess treatment integrity. Officers were encouraged to conduct 11-15 minute patrols each targeted hour during specific "hot times." Dispatchers and officers recorded time spent and officer activities, and forty-one 4-hour blocks of systematic social observation were used to assess the reliability of officer activity data.

The second part of the study assessed community impact through person-to-person survey interviews with hot spot residents about police, perceptions of crime and safety, and willingness to exert collective efficacy. In the first wave, 985 surveys were completed; wave two produced 768 completed surveys, and wave three produced 1,098 surveys.

The study evaluated police officers' perceptions of implementing hot spot policing by colleting pre-treatment surveys from 151 officers in the St. Louis County Police Department and post-treatment surveys from 240 officers. This study includes six SPSS files.

SCHIRA_aggregatecrimecfsdata.sav: This file includes 375 cases of crime recorded from December 2010 - May 2013, before, during, and after the 5 month treatment period. The 6 vari...

Abstract (en): This data collection provides statistical information on how prosecutors and the courts disposed of criminal cases involving adults arrested for felony crimes in an individual urban jurisdiction, St. Louis. The cases in the data file represent cases initiated in 1982, defined as screened, or filed in 1982. The collection includes disposition data on felonies for which an initial court charge was filed (cases filed) and for those felony arrests that were ultimately indicted or bound over to the felony court for disposition (cases indicted). It does not include information on all felony arrests declined for prosecution. It is, with a few exceptions, extracted from the defendant, case, charge and sentence records. All information stored on a jurisdiction's PROMIS system for felony cases initiated in 1982, cases initiated in 1981, and for two or more years after 1982. For reasons of confidentiality, the police department identification number (PDID), the individual's true name (NAME), and the circuit attorney's manual case file number (CASEJACK) have been blanked. This is part of a larger three-part study.

The Violent Criminal Apprehension Program (ViCAP) serves as the national information center that collects, collates and analyzes crimes of violence. The system contains solved and unsolved cases involving homicide or attempted homicide, sexual assaults,