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Intercity Variation in Youth Homicide, Robbery, and Assault, 1984-2006 [United States]

ICPSR 30981

Kevin Strom RTI International

Angela Browne Vera Institute of Justice

Codebook

P.O. Box 1248National Institute of Justice Ann Arbor, Michigan 48106Data Resources Program

www.icpsr.umich.edu

U.S. Department of Justice Office of Justice Programs National Institute of Justice

Terms of Use

The terms of use for this study can be found at: http://www.icpsr.umich.edu/icpsrweb/ICPSR/studies/30981/terms

Information about Copyrighted Content

Some instruments administered as part of this study may contain in whole or substantially in part contents from copyrighted instruments. Reproductions of the instruments are provided as documentation for the analysis of the data associated with this collection. Restrictions on "fair use" apply to all copyrighted content. More information about the reproduction of copyrighted works by educators and librarians is available from the United States Copyright Office.

NOTICE WARNING CONCERNING COPYRIGHT RESTRICTIONS

The copyright law of the United States (Title 17, United States Code) governs the making of photocopies or other reproductions of copyrighted material. Under certain conditions specified in the law, libraries and archives are authorized to furnish a photocopy or other reproduction. One of these specified conditions is that the photocopy or reproduction is not to be "used for any purpose other than private study, scholarship, or research." If a user makes a request for, or later uses, a photocopy or reproduction for purposes in excess of "fair use," that user may be liable for copyright infringement.

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ICPSR CODEBOOK NOTES

1) Detailed information about the Uniform Crime Reporting Program (UCR), including the Supplementary Homicide Reports (SHR), is available through the Uniform Crime Reporting Program Resources Guide.

2) Users should refer to the project's final technical report (Browne and Strom, 2010; NCJ 232622) for additional information on the study methodology, missing data, and imputation procedures.

3) ICPSR created the CASEID “CASE IDENTIFIER CREATED BY ICPSR” variable, which is a unique identifier.

4) ICPSR recoded blanks in numeric variables to -9 and labeled them Blank.

ICPSR 30981

Intercity Variation in Youth Homicide, Robbery, and Assault, 1984-2006 [United States]

Variable Description and Frequencies

Note: Frequencies displayed for the variables are not weighted. They are purely descriptive and may not be representative of the study population. Please review any sampling or weighting information available with the study.

Summary statistics (minimum, maximum, mean, median, and standard deviation) may not be available for every variable in the codebook. Conversely, a listing of frequencies in table format may not be present for every variable in the codebook either. However, all variables in the dataset are present and display sufficient information about each variable. These decisions are made intentionally and are at the discretion of the archive producing this codebook.

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Intercity Variation in Youth Homicide, Robbery, and Assault, 1984-2006 [United States]

CASE IDENTIFIER CREATED BY ICPSRCASEID

1-4 (width: 4; decimal: 0)Location:

numericVariable Type:

Based upon 2093 valid cases out of 2093 total cases.

AGENCYAGENCY

5-27 (width: 23; decimal: 0)Location:

characterVariable Type:

Based upon 2093 valid cases out of 2093 total cases.

IMPUTED NUMBER OF HOMICIDESHOM

28-31 (width: 4; decimal: 0)Location:

numericVariable Type:

Based upon 2093 valid cases out of 2093 total cases.

• Mean: 99.74 • Minimum: 1.00 • Maximum: 3452.00 • Standard Deviation: 201.57

NON-IMPUTED # OF HOMICIDESHOMICIDE

32-35 (width: 4; decimal: 0)Location:

numericVariable Type:

-9Range of Missing Values (M):

LabelValue

Blank-9 (M)

Based upon 1964 valid cases out of 2093 total cases.

• Mean: 82.16 • Minimum: 1.00 • Maximum: 1946.00 • Standard Deviation: 153.02

18-24 IMPUTED OFFENDER HOMICIDE RATEOMID1IRT

36-47 (width: 12; decimal: 8)Location:

numericVariable Type:

-9Range of Missing Values (M):

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- Study 30981 -

LabelValue

Blank-9 (M)

Based upon 2053 valid cases out of 2093 total cases.

• Mean: 52.84811994 • Minimum: 0.00000000 • Maximum: 464.93655396 • Standard Deviation: 50.60099986

18-24 NON-IMPUTED OFFENDER HOMICIDE RATEOMID1RT

48-59 (width: 12; decimal: 8)Location:

numericVariable Type:

-9Range of Missing Values (M):

LabelValue

Blank-9 (M)

Based upon 2053 valid cases out of 2093 total cases.

• Mean: 35.38686978 • Minimum: 0.00000000 • Maximum: 291.11996460 • Standard Deviation: 31.33155744

18-24 IMPUTED OFFENDER HOMICIDE RATE WITH IMPUTED MISSING YEAR(S)OMID2IRT

60-71 (width: 12; decimal: 8)Location:

numericVariable Type:

Based upon 2093 valid cases out of 2093 total cases.

• Mean: 52.44615466 • Minimum: 0.00000000 • Maximum: 464.93655396 • Standard Deviation: 50.31747388

25+ IMPUTED OFFENDER HOMICIDE RATEOOLD1IRT

72-82 (width: 11; decimal: 8)Location:

numericVariable Type:

-9Range of Missing Values (M):

LabelValue

Blank-9 (M)

Based upon 2053 valid cases out of 2093 total cases.

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- Study 30981 -

• Mean: 9.38058948 • Minimum: 0.00000000 • Maximum: 51.41652679 • Standard Deviation: 7.43477843

25+ NON-IMPUTED OFFENDER HOMICIDE RATEOOLD1RT

83-93 (width: 11; decimal: 8)Location:

numericVariable Type:

-9Range of Missing Values (M):

LabelValue

Blank-9 (M)

Based upon 2053 valid cases out of 2093 total cases.

• Mean: 5.64510458 • Minimum: 0.00000000 • Maximum: 26.06917381 • Standard Deviation: 3.99971763

25+ IMPUTED OFFENDER HOMICIDE RATE IMPUTED MISSING YEARSOOLD2IRT

94-104 (width: 11; decimal: 8)Location:

numericVariable Type:

Based upon 2093 valid cases out of 2093 total cases.

• Mean: 9.36776933 • Minimum: 0.00000000 • Maximum: 51.41652679 • Standard Deviation: 7.39987672

13-17 IMPUTED OFFENDER HOMICIDE RATEOYNG1IRT

105-116 (width: 12; decimal: 8)Location:

numericVariable Type:

-9Range of Missing Values (M):

LabelValue

Blank-9 (M)

Based upon 2053 valid cases out of 2093 total cases.

• Mean: 35.52393315 • Minimum: 0.00000000 • Maximum: 399.94815064 • Standard Deviation: 36.51005757

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13-17 NON-IMPUTED OFFENDER HOMICIDE RATEOYNG1RT

117-128 (width: 12; decimal: 8)Location:

numericVariable Type:

-9Range of Missing Values (M):

LabelValue

Blank-9 (M)

Based upon 2053 valid cases out of 2093 total cases.

• Mean: 26.91675833 • Minimum: 0.00000000 • Maximum: 193.47972107 • Standard Deviation: 28.40755071

13-17 OFF IMPUTED HOM RT IMPUTED MISSING YEARSOYNG2IRT

129-140 (width: 12; decimal: 8)Location:

numericVariable Type:

Based upon 2093 valid cases out of 2093 total cases.

• Mean: 35.23771942 • Minimum: 0.00000000 • Maximum: 399.94815064 • Standard Deviation: 36.31430152

POPULATIONPOP

141-147 (width: 7; decimal: 0)Location:

numericVariable Type:

-9Range of Missing Values (M):

LabelValue

Blank-9 (M)

Based upon 1985 valid cases out of 2093 total cases.

• Mean: 553178.37 • Minimum: 92047.00 • Maximum: 8115690.00 • Standard Deviation: 901340.22

POPULATION INTERP-EXTRAP USING TIME TO REPLACE 2006 MISSINGPOPINTRP

148-162 (width: 15; decimal: 7)Location:

numericVariable Type:

Based upon 2093 valid cases out of 2093 total cases.

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- Study 30981 -

• Mean: 554412.9290492 • Minimum: 92047.0000000 • Maximum: 8130059.0000000 • Standard Deviation: 902793.3773548

TIMETIME

163-164 (width: 2; decimal: 0)Location:

numericVariable Type:

Based upon 2093 valid cases out of 2093 total cases.

• Mean: 11.00 • Median: 11.00 • Minimum: 0.00 • Maximum: 22.00 • Standard Deviation: 6.63

TIME CUBEDTIMECUBD

165-169 (width: 5; decimal: 0)Location:

numericVariable Type:

Based upon 2093 valid cases out of 2093 total cases.

• Mean: 2783.00 • Median: 1331.00 • Minimum: 0.00 • Maximum: 10648.00 • Standard Deviation: 3213.95

TIME SQUAREDTIMESQ

170-172 (width: 3; decimal: 0)Location:

numericVariable Type:

Based upon 2093 valid cases out of 2093 total cases.

• Mean: 165.00 • Median: 121.00 • Minimum: 0.00 • Maximum: 484.00 • Standard Deviation: 151.15

YEARYEAR

173-176 (width: 4; decimal: 0)Location:

numericVariable Type:

Based upon 2093 valid cases out of 2093 total cases.

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• Mean: 1995.00 • Median: 1995.00 • Minimum: 1984.00 • Maximum: 2006.00 • Standard Deviation: 6.63

PERCENT LIVING IN POVERTYPOVERTY

177-187 (width: 11; decimal: 8)Location:

numericVariable Type:

Based upon 2093 valid cases out of 2093 total cases.

• Mean: 14.67346192 • Minimum: 4.34000000 • Maximum: 30.70000000 • Standard Deviation: 5.29714993

PERCENT AFRICAN AMERICANAFROAM

188-198 (width: 11; decimal: 8)Location:

numericVariable Type:

Based upon 2093 valid cases out of 2093 total cases.

• Mean: 25.55843751 • Minimum: 0.85979934 • Maximum: 84.03246842 • Standard Deviation: 19.67656513

PERCENT FEMALE HEADED HOUSEHOLDSFEMHH

199-209 (width: 11; decimal: 8)Location:

numericVariable Type:

Based upon 2093 valid cases out of 2093 total cases.

• Mean: 23.98834263 • Minimum: 4.46723524 • Maximum: 48.69303333 • Standard Deviation: 7.94143735

PERCENT RECEIVING PUBLIC ASSISTANCEPUBAST

210-215 (width: 6; decimal: 3)Location:

numericVariable Type:

Based upon 2093 valid cases out of 2093 total cases.

• Mean: 7.542

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• Minimum: 0.180 • Maximum: 26.140 • Standard Deviation: 4.654

PERCENT UNEMPLOYEDUNEMP

216-220 (width: 5; decimal: 2)Location:

numericVariable Type:

Based upon 2093 valid cases out of 2093 total cases.

• Mean: 6.25 • Median: 5.80 • Mode: 5.30 • Minimum: 1.50 • Maximum: 20.50 • Standard Deviation: 2.46

PERCENT OWNER OCCUPIED HOUSINGOWNOCC

221-231 (width: 11; decimal: 8)Location:

numericVariable Type:

Based upon 2093 valid cases out of 2093 total cases.

• Mean: 50.13207314 • Minimum: 12.09000000 • Maximum: 69.36817603 • Standard Deviation: 8.72607884

PERCENT AGES 18-24PT1824

232-242 (width: 11; decimal: 8)Location:

numericVariable Type:

Based upon 2093 valid cases out of 2093 total cases.

• Mean: 12.21352210 • Minimum: 6.29690542 • Maximum: 23.54116978 • Standard Deviation: 2.56832991

REGRESSION BASED FACTOR SCORE INCLUDING POVERTY AFROAM FEMHH PUBAST UNEMP

FAC1_1

243-253 (width: 11; decimal: 8)Location:

numericVariable Type:

Based upon 2093 valid cases out of 2093 total cases.

• Mean: 0.00000000

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• Minimum: -1.87647664 • Maximum: 3.98080125 • Standard Deviation: 1.00000000

JUVENILE HOMICIDES IMPUTEDJUVHOM1I

254-256 (width: 3; decimal: 0)Location:

numericVariable Type:

Based upon 2093 valid cases out of 2093 total cases.

• Mean: 4.47 • Median: 0.00 • Mode: 0.00 • Minimum: 0.00 • Maximum: 334.00 • Standard Deviation: 25.39

NARCOTICS-RELATED HOMICIDES IMPUTEDNARCHOM1I

257-259 (width: 3; decimal: 0)Location:

numericVariable Type:

Based upon 2093 valid cases out of 2093 total cases.

• Mean: 6.10 • Median: 2.00 • Mode: 0.00 • Minimum: 0.00 • Maximum: 152.00 • Standard Deviation: 13.52

GUN SUICIDE RATIOGUNSURT

260-269 (width: 10; decimal: 8)Location:

numericVariable Type:

Based upon 2093 valid cases out of 2093 total cases.

• Mean: 0.52618008 • Minimum: 0.06508889 • Maximum: 0.97985755 • Standard Deviation: 0.15205695

GANG HOMICIDESGANGHOM1

270-280 (width: 11; decimal: 8)Location:

numericVariable Type:

Based upon 2093 valid cases out of 2093 total cases.

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• Mean: 3.06753868 • Minimum: 0.00000000 • Maximum: 70.58823529 • Standard Deviation: 8.17960464

NARCOTICS-RELATED HOMICIDESNARCHOM1

281-292 (width: 12; decimal: 8)Location:

numericVariable Type:

Based upon 2093 valid cases out of 2093 total cases.

• Mean: 6.21680671 • Minimum: 0.00000000 • Maximum: 100.00000000 • Standard Deviation: 7.79351116

ALCOHOL OUTLETSALCOUT1

293-298 (width: 6; decimal: 1)Location:

numericVariable Type:

Based upon 2093 valid cases out of 2093 total cases.

• Mean: 178.19 • Minimum: 8.00 • Maximum: 1612.20 • Standard Deviation: 231.67

ALCOHOL OUTLET DENSITYALCDEN1

299-308 (width: 10; decimal: 8)Location:

numericVariable Type:

Based upon 2093 valid cases out of 2093 total cases.

• Mean: 0.38384884 • Minimum: 0.03581167 • Maximum: 1.67465953 • Standard Deviation: 0.29908818

CITY NAMECITY3

309-332 (width: 24; decimal: 0)Location:

characterVariable Type:

Based upon 2093 valid cases out of 2093 total cases.

ROBBERY RATES, YOUNG ADULT TOTALRA_ATR

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333-344 (width: 12; decimal: 8)Location:

numericVariable Type:

-9Range of Missing Values (M):

LabelValue

Blank-9 (M)

Based upon 2070 valid cases out of 2093 total cases.

• Mean: 37.83255511 • Minimum: 1.15195429 • Maximum: 206.38035027 • Standard Deviation: 25.90715223

ROBBERY RATES, JUVENILE TOTALRA_JTR

345-356 (width: 12; decimal: 8)Location:

numericVariable Type:

-9Range of Missing Values (M):

LabelValue

Blank-9 (M)

Based upon 2070 valid cases out of 2093 total cases.

• Mean: 27.29775543 • Minimum: 0.32311222 • Maximum: 341.80035651 • Standard Deviation: 24.15349521

ASSAULT RATES, YOUNG ADULT TOTALAA_ATR

357-368 (width: 12; decimal: 8)Location:

numericVariable Type:

-9Range of Missing Values (M):

LabelValue

Blank-9 (M)

Based upon 2070 valid cases out of 2093 total cases.

• Mean: 73.42957651 • Minimum: 1.77323829 • Maximum: 457.14621448 • Standard Deviation: 53.40922808

ASSAULT RATES, JUVENILE TOTALAA_JTR

369-380 (width: 12; decimal: 8)Location:

numericVariable Type:

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- Study 30981 -

-9Range of Missing Values (M):

LabelValue

Blank-9 (M)

Based upon 2070 valid cases out of 2093 total cases.

• Mean: 37.35675247 • Minimum: 0.00000000 • Maximum: 227.82454301 • Standard Deviation: 28.16244029

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