Ontario Health Study
The Ontario Health Study (OHS) is a longitudinal prospective cohort study that will serve as an integrated platform for investigating the complex interplay of environmental, lifestyle and genetic factors that increase individual and community risk of developing cancer, heart disease, diabetes, asthma, depression and other common adult diseases. All adult residents of Ontario are eligible to participate, and the intent is to follow participants for their entire lifespan. The OHS is committed to allowing access to data and samples for all bona fide researchers with the appropriate scientific and ethical approvals.
- Start Year
- 2009
Visit OHS
| Investigators | Contacts |
|---|---|
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Design
- Study design
- Cohort
Recruitment
- Sources of Recruitment
-
- Individuals
Number of participants
- Number of participants
- 150,000
- Number of participants with biosamples
- 78,000
Access
Availability of data and biosamples
| Data | |
| Biosamples | |
| Other |
Timeline
OHS population
The OHS cohort consists of men and women aged 18 and over residing in the Province of Ontario.
Selection Criteria
- Minimum age
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18
- Newborns
- Twins
- Countries
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- Canada
- Supplementary Information
-
Only exclusion noted to date is incarceration.
Recruitment
- Sources of recruitment
-
- General population
- General Population
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- Volunteer enrolment
Number of participants
- Number of participants
- Number of participants with biosamples
Data Collection Events
| # | Name | Description | Start | End |
|---|---|---|---|---|
| 0 |
OHS - Pilot Phase
|
March 2009 – July 2010: Questionnaire and physical measures data, and blood and urine samples collected from 8,205 pilot participants in three assessment centres. |
2009-03 | 2010-07 |
| 0 |
OHS - Baseline Recruitment
|
The baseline recruitment is ongoing. Enrichment of resource is ongoing: 1. Biospecimen collection 2. Assessment centre visits 3. Follow-up questionnaires ... |
2010-09 | 2015 |