The Aggressive Incidents Scale


Recording aggression and violence involving patients using a common language


Inform and Evaluate Interventions

Improve Documentation of Aggression and Violence

Improve Communication Based on Reliable Documentation

Monitor Escalation

Foster Discussion of Risk

The AIS uses a common language to describe and rate aggressive incidents

Incidents are recorded each day, and a total is provided for each week and month. This results in a cumulative and graphic depiction of a patient’s record of aggression. From the monthly report for a patient, anyone can interpret the level of aggression experienced by the patient, and whether there are patterns, including improvement or escalation.

The AIS may be used independently, or in conjunction with the HARM

The AIS language is a two-part code.

The first part is a scale (1-9) reflecting the severity of the incident.

The second part is a letter reflecting whether staff intervened during the incident, and the type of intervention that occurred.