Data Access Process and Timelines

Before submitting a request, we recommend that you familiarize yourself with the Ontario Health Study Data and Biosample Access Policy and contact

  1. Submit Preliminary Access Application Form, if needed.
  2. Secure funding.
  3. Submit Data and Biosample Application Form along with required documents:
    • Research protocol with ethics approval
    • Proof of scientific peer-review of research protocol, if available
    • Approval by Research Ethics Board
    • 2-page CV of principal applicant
  4. Data Access Committee reviews applications
  5. If the application is approved, the OHS will notify the approved user and a Data and Biosample Access Agreement will need to be signed.

Canadian Partnership for Tomorrow Data Access

The Ontario Health Study is one of five regional cohort studies participating in the Canadian Partnership for Tomorrow Project. Other cohorts include: CARTaGENE, Atlantic PATH, Alberta Tomorrow Project and BC Generations Study.

If you are interested in accessing data and samples from multiple cohorts, visit the Canadian Partnership for Tomorrow Project website at