Which factor is NOT part of establishing the modus operandi in a robbery?

Establishing the modus operandi (MO) in a robbery involves identifying specific patterns and characteristics that are consistent with the way a particular crime is committed. This includes key elements like the number of suspects involved, the methods employed to restrain victims, and the locations where the crimes occur.

The number of suspects can provide insights into the planning and execution of the robbery, showing whether it was a solo act or a coordinated effort. The restraining methods indicate the level of violence or intimidation used, which can also signal the offender's intent and risk level. Location is crucial as it might reveal if the perpetrator is targeting certain neighborhoods or venues familiar to them, or if they are selecting areas based on vulnerable populations.

On the other hand, the victim's age does not significantly contribute to establishing a consistent modus operandi for the robberies. While it might be relevant in certain cases to understand why a specific victim was chosen, it does not inform the patterns of behavior that characterize the criminal's approach to committing the act itself. Thus, the victim's age is not a defining factor in establishing the MO of a robbery.