The higher rates of control intervention use in general hospitals, compared with those in psychiatric hospitals, and in those who have significant communication difficulties indicate two areas where the adoption of evolving clinical practices can have an impact in avoiding and reducing the use of control interventions. [...] Although use of control interventions has been considered an indicator of the quality of psychiatric care,12 variations in the way the interventions are defined, legislated and reported, both internationally and across jurisdictions, make comparative assessments of control intervention use challenging. [...] Restraint Use and Other Control Interventions for Mental Health Inpatients in Ontario 3 CIHI’s Ontario Mental Health Reporting System OMHRS was established by the Canadian Institute for Health Information (CIHI) in 2005 through a partnership with the Ontario Ministry of Health and Long-Term Care to enable standardized data collection and reporting for adult inpatient mental health services in Onta [...] A summary of the characteristics of individuals in the control intervention groups and the non-intervention group is available in Table B1. [...] The fact that individuals in the oldest age group were significantly less likely than those in the youngest age group to experience control interventions may be a reflection of the type of interventions examined here.