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NCJRS Abstract

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NCJ Number: 215343 Find in a Library
Title: Analysis of Missingness in UCR Crime Data
Author(s): Michael D. Maltz
Corporate Author: Criminal Justice Research Ctr, Ohio State University
United States of America
Date Published: 2006
Page Count: 21
Sponsoring Agency: Criminal Justice Research Ctr, Ohio State University
Columbus, OH 43210
National Institute of Justice (NIJ)
Washington, DC 20531
National Institute of Justice/NCJRS
Rockville, MD 20849
NCJRS Photocopy Services
Rockville, MD 20849-6000
Grant Number: 2004-IJ-CX-0083
Sale Source: National Institute of Justice/NCJRS
Box 6000
Rockville, MD 20849
United States of America

NCJRS Photocopy Services
Box 6000
Rockville, MD 20849-6000
United States of America
Document: PDF
Type: Report (Study/Research)
Format: Document
Language: English
Country: United States of America
Annotation: This paper presents an analysis of the nature and type of the missing data problem in the Federal Bureau of Investigation’s (FBI’s) Uniform Crime Reports (UCR) data.
Abstract: The analysis indicated that the most populous law enforcement agencies and larger law enforcement agencies had the least amount of missing data, termed “missingness.” This is true for two reasons: (1) agencies that handle higher crime rates have greater statistical capabilities, and (2) agencies with populations of 100,000 or more are contacted by the FBI and urged to complete their data. The impact of missingness on crime statistics was analyzed at the population, State and county levels, which revealed that missingness, particularly at the county level, could lead to over half of the population being left out of crime statistics. The analysis suggests that UCR data cannot be used in an analysis without a consideration of the gaps in the data. This research was part of a larger grant project for the National Institute of Justice (NIJ) that focused on four main deliverables: (1) cleaned UCR data for the 50 States and the District of Columbia; (2) a UCR charting utility to allow users to plot monthly crime data; (3) a set of instructions to allow the addition of subsequent years of data; and (4) an analysis of the nature and extent of missingness in the UCR data. This paper provides the fourth deliverable by exploring the length of runs of missingness and how missingness varies by State, by year, and by size and type of agency. Figures, footnotes, references, appendix
Main Term(s): FBI Uniform Crime Reports
Index Term(s): Crime Statistics; Data analysis; Data integrity; NIJ grant-related documents
Note: For related document, see NCJ-215341 and 215342.
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