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What Is NIBRS?
CHARACTERISTICS OF DATA ELEMENTS
REPORTING REQUIREMENTS
There are three levels of reporting requirement for data elements in the NIBRS file: mandatory, conditional, and optional. Some data elements, such as ORI and incident number, are always required and can be considered as mandatory. Some data elements are required as the result of IF statements and can be considered conditional. For example, if the type of victim is individual (victim segment data element 25), then the age of the victim must be entered (victim segment data element 26). Some data elements such as arrestee ethnicity are not mandatory or conditional, but simply optional.
To see the Offense Group "A" Incident and Arrest Report data elements and their reporting requirements, select the NIBRS data segment of interest:
OFFENSE GROUP "A" INCIDENT REPORT
ADMINISTRATIVE SEGMENT DATA ELEMENT CHARACTERISTICS
The FBI NIBRS file allows for one administrative segment record per incident report. The characteristics of the administrative segment data elements are:
No. Data Element Requirement Occurrence(s)
1* ORI Number Mandatory Single 2* Incident Number Mandatory Single 3 Incident Date/Hour Mandatory Single 4 Cleared Exceptionally Mandatory Single 5 Exceptional Clearance Date Conditional Single
* Data elements 1 and 2 repeat for the Group "A" offenses to link all segments of an incident.
OFFENSE GROUP "A" INCIDENT REPORT
OFFENSE SEGMENT DATA ELEMENT CHARACTERISTICS
The FBI NIBRS data file allows up to 10 separate offense segment records per incident report. Each offense segment record has these data element and characteristics:
No. Data Element Requirement Occurrence(s) 1* ORI Number Mandatory Single 2* Incident Number Mandatory Single 6 UCR Offense Code Mandatory Single 7 Offense Attempted/Completed Mandatory Single 8 Offender(s) Suspected of Using Mandatory Multiple 8a Bias Motivation Mandatory Single 9 Location Type Mandatory Single 10 Number of Premises Entered Conditional Single 11 Method of Entry Conditional Single 12 Type Criminal Activity Conditional Multiple 13 Type Weapon/Force Involved Conditional Multiple
* Data elements 1 and 2 are repeated to link all the segments and related segment records for one incident.
OFFENSE GROUP "A" INCIDENT REPORT
PROPERTY SEGMENT DATA ELEMENT CHARACTERISTICS
The FBI NIBRS data file allows up to 10 separate types of property loss segment records per incident report. Each property loss segment record has these data element and characteristics:
No. Data Element Requirement Occurrences 1* ORI Number Mandatory Single 2* Incident Number Mandatory Single 14 Type Property Loss/etc. Conditional Single 15 Property Description** Conditional Multiple 16 Value of Property Conditional Single 17 Date Recovered Conditional Single 18 Number of Stolen Motor Vehicles Conditional Single 19 Number of Recovered Motor Vehicles Conditional Single 20 Suspected Drug Type*** Conditional Mutiple 21 Estimated Drug Quantity Conditional Single 22 Type Drug Measurement Conditional Single
* Data elements 1 and 2 are repeated to link all the segments and related segment records for one incident.
** For each category of property description that is reported, a corresponding value of property for that category is assigned and a date recovered value is entered.
*** For each category of suspected drug type that is reported, a corresponding quantity of the drug is estimated and the type of drug measurement is recorded.
OFFENSE GROUP "A" INCIDENT REPORT
VICTIM SEGMENT DATA ELEMENT CHARACTERISTICS
The FBI NIRBS data file allows up to 999 separate victim segment records per incident report. Each victim is assigned a unique sequential victim number (data element 23). Each victim segment record has these characteristics:
No. Data Element Requirement Occurrences
1* ORI Number Mandatory Single
2* Incident Number Mandatory Single
23 Victim (Sequence) Number Mandatory Single
24 Victim Connected to UCR Mandatory Multiple
Offense Code(s)
25 Type of Victim Mandatory Single
26 Age (of Victim) Conditional Single
27 Sex (of Victim) Conditional Single
28 Race (of Victim) Conditional Single
29 Ethnicity (of Victim) Conditional/Optional Single
30 Resident Status (of Victim) Conditional/Optional Single
31 Aggravated Assault/Homicide Conditional Multiple
Circumstances
32 Additional Justifiable Homicide Conditional Single
Circumstances
33 Type Injury Conditional Multiple
34 Offender Number(s) to be Related** Conditional Multiple
35 Relationship(s) of Victim to Conditional Single
Offender(s)
* Data elements 1 and 2 are repeated to link all the segments and related segment records for one incident.
** A unique offender sequence number identifies each offender that offended this victim. An offender can have only one relationship to this victim.
OFFENSE GROUP "A" INCIDENT REPORT
OFFENDER SEGMENT DATA ELEMENT CHARACTERISTICS
The FBI NIBRS data file allows up to 99 separate offender segment records per incident report. Each offender is assigned a unique sequential offender number(data element 36). Each offender segment record has these characteristics:
No. Data Element Requirement Occurrences 1* ORI Number Mandatory Single 2* Incident Number Mandatory Single 36 Offender (Sequence) Number Mandatory Single 37 Age (of Offender) Mandatory Single 38 Sex (of Offender) Mandatory Single 39 Race (of Offender) Mandatory Single
* Data elements 1 and 2 are repeated to link all the segments related to one incident.
OFFENSE GROUP "A" INCIDENT REPORT
ARRESTEE SEGMENT DATA ELEMENT CHARACTERISTICS
The FBI NIBRS data file allows up to 99 separate arrestee segment records per incident report. Each arrestee is assigned a unique sequential arrestee number (data element 40). Each arrestee segment record has these characteristics:
No. Data Element Requirement Occurrences 1* ORI Number Mandatory Single 2* Incident Number Mandatory Single 40 Arrestee (Sequence) Number Mandatory Single 41 Arrest (Transaction) Number Mandatory Single 42 Arrest Date Mandatory Single 43 Type of Arrest Mandatory Single 44 Multiple Arrestee Segments Indicator Mandatory Single 45 UCR Arrest Offense Code Mandatory Single 46 Arrestee Was Armed With Mandatory Multiple 47 Age (of Arrestee) Mandatory Single 48 Sex (of Arrestee) Mandatory Single 49 Race (of Arrestee) Mandatory Single 50 Ethnicity (of Arrestee) Optional Single 51 Resident Status (of Arrestee) Optional Single 52 Disposition of Arrestee Under 18 Conditional Single
* Data elements 1 and 2 are repeated to link all the segments related to one incident.