Aggressive challenging behavior in adults with intellectual disability: An electronic register-based cohort study of clinical outcome and service use.

Background: Aggressive challenging behavior in people with intellectual disability is a frequent reason for referral to secondary care services and is associated with direct harm, social exclusion, and criminal sanctions. Understanding the factors underlying aggressive challenging behavior and predictors of adverse clinical outcome is important in providing services and developing effective interventions.

Methods: This was a retrospective total-population cohort study using electronic records linked with Hospital Episode Statistics data.