Juvenile Single Segment Analysis

Research Question 3: At what time of day are most juvenile multiple offender property offenses committed?

Knowledge of the time of day that these incidents are occurring can inform decision-makers who are involved in resource allocation and intervention policy.

The data source for this research question is the 1996 NIBRS hierarchical data file. There were 1,487 agencies in nine states reporting during 1996. The file used for the analysis is an incident-level aggregated flat file, created by combining multiple segments of data. (See Creating an Incident-Level Aggregate Flat File for a detailed explanation of this process.) Variables from the following segments were used: administrative, victim, offender, offense, arrest, and property. Although these six segments were used, not all variables from all segments were needed for this analysis.

For this research question, a weight variable was created so that an incident is assigned a weight of 1 and multiple occurrences of the same incident are assigned a weight of 0. Only incidents that are assigned a weight of 1 and are property offense incidents are selected. The data is presented in a basic line chart showing the percent by the incident hour.

Graph 1 shows that the peak time of day for juvenile multiple offender incidents involving property offenses is 4:00 p.m. Some caution in interpretation is necessary because for many incidents, the time at which the incident occurred is not necessarily known.

Further analyses for this file might include a closer look at the demographics of the offenders and co-offenders.

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