TREND AND DEVIATION IN CRIME RATES: A COMPARISON OF UCR AND NCS DATA FOR BURGLARY AND ROBBERY*

Trends and year-to-year deviations in UCR and NCS data on burglary and robbery are examined for the period 1973 to 1985. We find strong correspondence between year-to-year deviations in UCR crime rates and NCS victimization rates for both crime types. The difference between the two data series lies primarily in their contrasting trends, although there is some evidence that trends in UCR and NCS crime rates have been converging in recent years. Ex post forecasts reveal that the UCR/NCS relationships estimated from the 1973–1985 data continued through 1986 and 1987. Although the UCR rates in 1986 were somewhat influenced by unusual increases in the proportion of crimes reported to the police that year, changes in crime reporting for the period as a whole have had little effect on UCR burglary and robbery rates. We conclude that, within the two serious crime types examined in this study, there is strong consistency between the alternative data sources on variations in crime rates over time.

[1]  L. Miller.  Estimates of the Population of the United States by Age, Sex, and Race: 1980 to 1986. , 1987 .

[2]  M. Lichbach,et al.  Alternative Measures of Crime: A Statistical Evaluation* , 1982 .

[3]  W. Gove,et al.  ARE UNIFORM CRIME REPORTS A VALID INDICATOR OF THE INDEX CRIMES? AN AFFIRMATIVE ANSWER WITH MINOR QUALIFICATIONS* , 1985 .

[4]  Scott H. Decker,et al.  Official crime rates and victim surveys: An empirical comparison , 1977 .

[5]  S. Menard.  Short-term trends in crime and delinquency: A comparison of UCR, NCS, and self-report data , 1987 .

[6]  R. O’Brien,et al.  Crime and Victimization Data , 1985 .

[7]  Scott Menard,et al.  UCR and NCS: Comparisons over space and time , 1988 .

[8]  R. O’Brien,et al.  An Empirical Comparison of the Validity of UCR and NCS Crime Rates , 1980 .

[9]  James P. Levine.  THE POTENTIAL FOR CRIME OVERREPORTING IN CRIMINAL VICTIMIZATION SURVEYS , 1976 .

[10]  Kenneth C. Land,et al.  Discrepancies Between Crime Reports and Crime Surveys , 1984 .

[11]  Robert M. O'Brien.  Comparing detrended UCR and NCS crime rates over time: 1973-1986 , 1990 .

[12]  Albert D. Biderman,et al.  On Exploring the "Dark Figure" of Crime , 1967 .

[13]  P. Cook.  Is Robbery Becoming More Violent an Analysis of Robbery Murder Trends Since 1968 , 1985 .

[14]  Steven F. Messner,et al.  The "dark figure" and composite indexes of crime: Some empirical explorations of alternative data sources , 1984 .

[15]  A. Booth,et al.  Correlates of City Crime Rates: Victimization Surveys, Versus Official Statistics , 1977 .

[16]  P. Ennis.  Criminal victimization in the United States : a report of a national survey , 1967 .

[17]  C. Harlow.  Reporting crimes to the police , 1985 .