The OHTN Cohort Study

The OHTN Cohort Study (OCS) is a community-governed, scientifically rigorous research initiative, designed to improve the health and well-being of people living with HIV in Ontario by promoting and supporting scientific, community-based and policy-relevant research. The OCS is a multi-site research study that collects clinical and sociobehavioural data on a cohort of participants living with HIV over time. The mission of the OCS is to develop, support and sustain a unique research database and cohort, governed by people living with HIV in Ontario and used in partnership by scientists, community-based researchers and other stakeholders.

Principal Scientific Aims of the OCS

OCS Core Commitments

OCS Goals

News & Events

New Fact Sheets Online

September 24, 2014

Get up to speed with the most recent OCS findings: three new Fact Sheets are now available online.
- Gender Differences in Severity and Correlates of Depression Symptoms in People Living with HIV in Ontario, Canada
- Demographic and Clinical Factors Correlating with High Levels of Psychological Distress in HIV-positive Women Living in Ontario, Canada
- Modest Rise in Chlamydia and Gonorrhoea Testing did not Increase Case Detection in a Clinical HIV Cohort in Ontario, Canada

OCS SSC Co-Chair on the News

May 26, 2014

Curtis Cooper, the OCS Scientific Steering Committee Co-Chair, was on the news sharing his thoughts on the new HCV drug, Sovaldi. Watch the interview...

OCS PI on the News

May 14, 2014

Sean Rourke, the Principal Investigator (PI) of the OCS was recently interviewed on CTV to discuss British Columbia's new testing initiative and Ontario's approach to the epidemic. Watch the clip...

OCS Presentations at CAHR

April 23, 2014

This year there will be six presentations using OCS data at CAHR. Check out our presentations page to see who will be sharing and on what topic.