Sum of Length is an internal calculation used to produce the Average Case Length in a specific offense category. Neither should be read to be associated with any individual case. Rather, the Sum of Length is the number of days in total spent on all the cases in which defendants were charged in a specific charge category combined. The Average Case Length in a particular charge category is then derived by dividing the Sum of Length by the number of defendants.

The disposition data presented in this data reflects the culmination of the fact-finding process that leads to the resolution of a case. Included in this data set are the defendant counts by disposition and year.

The disposition data presented in this report reflects the culmination of the fact-finding process that leads to the resolution of a case. Included in this data set are the defendant counts by disposition, their associated offense type, and year.

The disposition data presented in this report reflects the culmination of the fact-finding process that leads to the resolution of a case. Included in this data set are the defendant counts by age and disposition, their associated offense type, and year.

The disposition data presented in this report reflects the culmination of the fact-finding process that leads to the resolution of a case. Included in this data set are the defendant counts by gender and disposition, their associated offense type, and year.

The disposition data presented in this report reflects the culmination of the fact-finding process that leads to the resolution of a case. Included in this data set are the defendant counts by race and disposition, their associated offense type, and year.

The disposition data presented in this report reflects the culmination of the fact-finding process that leads to the resolution of a case. Included in this data set are the defendant counts by city/suburb and disposition, their associated offense type, and year.

The Initiation results data presented here reflects all of the arrests that came through the door of the State's Attorneys Office (SAO). An initiation is how an arrest turns into a “case” in the courts. Most cases are initiated through a process known as felony review, in which SAO attorneys make a decision whether or not to prosecute. Cases may also be indicted by a grand jury or, in narcotics cases, filed directly by law enforcement (labeled "BOND SET (Narcotics)" in this data). Included in this data set are the defendant counts by initiation and year. This data includes felony cases handled by the Criminal, Narcotics, and Special Prosecution Bureaus. It does not include information about cases processed through the Juvenile Justice and Civil Actions Bureaus.

The Initiation results data presented here reflects all of the arrests that came through the door of the State's Attorneys Office (SAO). Included in this data set are the defendant counts by initiation, their associated "topline" charge offense type, and year.

An initiation is how an arrest turns into a “case” in the courts. Most cases are initiated through a process known as felony review, in which SAO attorneys make a decision whether or not to prosecute. Cases may also be indicted by a grand jury or, in narcotics cases, filed directly by law enforcement (labeled "BOND SET (Narcotics)" in this data). Included in this data set are the defendant counts by initiation and year. This data includes felony cases handled by the Criminal, Narcotics, and Special Prosecution Bureaus. It does not include information about cases processed through the Juvenile Justice and Civil Actions Bureaus.