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Using OHS Data for Research

With 225,000 participants, the Ontario Health Study (OHS) is a rich resource for researchers investigating cancer and other chronic diseases. Researchers can now apply for access to de-identified data and biospecimens collected by the Study.

Here’s what you need to know about using OHS data for research:

  • Collaboration amongst researchers is strongly encouraged to maximize the access to and use of Study data and biosamples.
  • Access is time-limited and for approved analyses only.
  • Proposals will be accepted for access to:
    – Questionnaire data
    – Physical measures
    – Biorepository materials
  • Only de-identified data and biosamples will be provided to investigators.
  • Exclusive access to any data and/or biosamples will not be permitted.
  • Researchers will not receive exclusive access to an analysis or question of interest.

Applications will be reviewed by our Data Access Committee who will consider:

  • Scientific merit of the research project
  • Potential impact on research participants
  • Appropriate use of limited resources

Latest Research Underway Using OHS Data

Diseases such as cancer, heart disease and diabetes are the primary causes of death in Canadian adults and treating these and other illnesses costs the Canadian health care system billions of dollars annually. The researchers using Ontario Health Study data are investigating factors that increase the risk of developing various diseases, as well as what can be done to reduce the chance of developing them. These risk factors may include where people live and work, what they eat, how much they exercise, whether they smoke and other factors that have not yet been identified.

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New funding from the Canadian Institutes of Health Research will help Ontario team study metabolic syndromes

Jul 18, 2018

Data and samples from the Ontario Health Study will be used to research a range of health conditions that increase the risk of serious disease. Read the media release to find out more.

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OHS Principal Investigator part of team awarded two grants from the Canadian Institutes for Health Research (CIHR) to study the impact of environmental exposures and genetics

Jul 1, 2018

Dr. Philip Awadalla, the Ontario Health Study’s Principal Investigator, is part of a University of Toronto team that was awarded a $4 million grant in 2016 from the Canadian Institutes for Health Research (CIHR) for the Canadian Environmental Urban Health Research Consortium project. The consortium will play a key role in supporting the research needed

Latest Research Findings Resulting from OHS Data

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Harmonization of the Health and Risk Factor Questionnaire data of the Canadian Partnership for Tomorrow Project: a descriptive analysis

Apr 23, 2019

The Ontario Health Study is one of five regional cohorts that make up the Canadian Partnership for Tomorrow Project, a health research platform using data and biosamples from more than 300,000 Canadians. The complex process of harmonizing a subset of data collected by each of the five regional cohorts, so that they are standardized and

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The Canadian Partnership for Tomorrow Project: a pan-Canadian platform for research on chronic disease prevention

Jun 11, 2018

The Ontario Health Study is the largest contributor to Canada’s biggest national health research platform, the Canadian Partnership for Tomorrow Project (CPTP). This CMAJ paper provides an overview of the CPTP, its design, data access process, and cohort profile. It positions the CPTP as a unique resource for researchers interested in the complex interactions between