Dataset Ontario Mental Health Reporting System (OMHRS)

Ontario Mental Health Reporting System (OMHRS) 
Data Provider (source):

Canadian Institute for Health Information


The Ontario Mental Health Reporting System (OMHRS) analyzes and reports on information submitted to CIHI about all individuals receiving adult mental health services in Ontario, as well as some individuals receiving services in youth inpatient beds and select facilities in other provinces. OMHRS includes information about mental and physical health, social supports and service use, as well as care planning, outcome measurement, quality improvement and case-mix funding applications. 

Find out more about inpatient mental health services, including reports and analyses based on OMHRS data.

OMHRS comprehensive data is collected using the Resident Assessment Instrument — Mental Health (RAI-MH©) version 2.0, a standardized clinical instrument used to regularly assess those receiving inpatient mental health care. The RAI-MH gathers information on where individuals are admitted from and why, where they are discharged to and why, and, potentially, information at other points in time during a hospital stay.  Additional information on the RAI-MH is available in the Further Information section of this page.

Data is currently submitted to CIHI from participating hospitals in Ontario, as well as from 2 pilot facilities in Newfoundland and Labrador and 1 pilot facility in Manitoba.

To deliver comparable and actionable information to accelerate improvements in health care, health system performance and population health across the continuum of care 
Type of Data (select all that apply):
Health Care and Health Services 
Data Collection Method (select all that apply):
Individual Level Data, Administrative Data 
Participating sites in Ontario, NFLD and Manitoba 
Identifiers used for linkage:
Personal Health Number, Date of birth 
Access requiredments and conditions for Researchers and Projects:

Data Access Conditions:

  • In addition to the CIHI data access condition below, requests for Quebec data are subject to review and authorization from the Quebec Privacy Commission (Commission d’accès à l’information du Québec) and the Québec Ministry of Health and Social Services (MSSS).
  • CIHI discloses health information and analyses on Canada’s health system and the health of Canadians in a manner consistent with its mandate and core functions. These disclosures typically fall into one of four categories:
    • Disclosures to parties with responsibility for the planning and management of the health care system to enable them to fulfill those functions;
    • Disclosures to parties with a decision-making role regarding health care system policy to facilitate their work;
    • Disclosures to parties with responsibility for population health research and/or analysis; and
    • Disclosures to third-party data requesters to facilitate health or health services research and/or analysis.
  • Prior to disclosure, CIHI reviews the requests to ensure that the disclosures are consistent with the above and meet the requirements of applicable legislation.
  • CIHI data disclosures are made at the highest degree of anonymity possible while still meeting the research and/or analytical purposes. This means that, whenever possible, data are aggregated.
  • Where aggregate data are not sufficiently detailed for the research and/or analytical purposes, data that have been de-identified using various de-identification processes may be disclosed to the recipient on a case-by-case basis and where the recipient has entered into a data protection agreement or other legally binding instrument with CIHI.
  • Only those data elements necessary to meet the identified research or analytical purposes may be disclosed.
  • For more information, please reference CIHI’s Privacy Policy:

Requirements for record-level data access:

  • Prior to disclosure, the recipient must sign a data protection agreement or other legally binding instrument that, at a minimum, contains the following requirements:
    • Prohibits re-identifying or contacting the individuals;
    • Prohibits linking the de-identified data unless expressly authorized in writing by CIHI;
    • Limits the purposes for which the de-identified data may be used;
    • Requires that the de-identified data be safeguarded;
    • Limits publication or disclosure to data that do not allow identification of any individual;
    • Requires the destruction of data, as specified;
    • Permits CIHI to conduct on-site privacy audits pursuant to its privacy audit program; and
    • Requires the recipient to comply with any other provision that CIHI deems necessary to further safeguard the data.
  • Prior to the disclosure of de-identified data for research purposes, the requester will provide CIHI with evidence of Research Ethics Board approval.
  • CIHI reserves the right to impose any other requirement(s) as needed on a case-by-case basis in order to maintain the confidentiality of de-identified data.
  • Prior to disclosure, program areas will evaluate the de-identified data to assess and subsequently minimize privacy risks of re-identification and residual disclosure, and to implement the necessary mitigating measures to manage residual risks.
  • CIHI will not disclose de-identified data if it is reasonably foreseeable in the circumstances that it could be utilized, either alone or with other information, to identify an individual and that, where it is reasonably foreseeable that it could be used to identify an individual, the information will be treated as personal health information.

Access process:  All data access requests can be initiated at the following CIHI webpage:, and complete an Access Data Inquiry Form.

Phone: 1-613-241-5543 Email: 




Data is available from:
Longitudinal data is available from 2005-2006 onwards. Prior to 2005-2006, limited data is available for some organizations only. 
More Information (including references):

The Resident Assessment Instrument — Mental Health (RAI-MH) tool was developed by interRAI , Ontario’s Ministry of Health and Long-Term Care and the Ontario Hospital Association. It includes the following:

  • The Minimum Data Set for Mental Health (MDS-MH)©, with approximately 300 data elements
  • 20 Mental Health Clinical Assessment Protocols (MH CAPs)© for care planning
  • 5 Quality Indicators for Mental Health (QIMH)
  • 7 outcome measures based on clinical scales
  • The System for Classification of In-Patient Psychiatry (SCIPP) case-mix methodology

Assessments are completed:

  • At admission
  • At discharge
  • Every 3 months, for patients with extended stays
  • Whenever there is a significant, unexpected change in a patient’s clinical status

Case-mix methodologies (a form of resource measurement) categorize assessment data into homogenous groups based on the administrative and clinical data collected. This information can be used to understand the different care requirements of clients by comparing health care organization and case-mix resource use.

OMHRS uses the System for Classification of In-Patient Psychiatry (SCIPP) that was developed for the RAI-MH. Case-mix methodologies (a form of resource measurement) categorize assessment data into homogenous groups based on the administrative and clinical data collected. This information can be used to understand the different care requirements of clients by comparing health care organization and case-mix resource use.

The OMHRS data elements in the MDS-MH are organized into the following sections:

  • Patient identifiers
  • Personal items
  • Referral items
  • Mental health service history
  • Assessment information
  • Mental state indicators
  • Substance use and excessive behaviours
  • Harm to self and others
  • Behaviour disturbance
  • Cognition
  • Self-care
  • Communication/vision patterns
  • Health conditions and possible medication side effects
  • Stressors
  • Service utilization/treatments
  • Control procedures/observation
  • Nutrition
  • Role functioning and social relations
  • Resources for discharge
  • Psychiatric diagnostic information
  • Service history
  • Medications

Additional information on OMHRS Assessment Types and Data Elements, 2016–2017, can be found on CIHI’s website.

Additional links and information are available on the OMHRS website under the Key Resources section.

[2019-02-11 13:30] Sarah Kesselring: Edited by Sarah Kesselring (skesselring)