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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.

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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.

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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.

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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.

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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.

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