Comparative Outcomes And Service Utilization Trends (COAST) Fact Sheet

The Comparative Outcomes And Service Utilization Trends (COAST) study is a population-based cohort study that aims to examine the health outcomes and health service use of people living with HIV (PLHIV), including both those who are accessing and not accessing antiretroviral therapy, as compared to the general population of British Columbia.

The study comprises two defined cohorts of adults: a cohort including PLHIV and a comparison group consisting of a 10% random sample of adults from the general population of BC followed from 1996 to 2013. COAST contains de-identifed health-related data on antiretroviral and health service use from the BC Centre for Excellence in HIV/AIDS (BC-CfE) and other health administrative data holdings within Population Data BC.

The study currently has linked data from 1996 to 2013, with future data linkages planned for additional years.

Learn more about the COAST study’s aims, objectives and key findings in this fact sheet.

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During the Canada Post strike announced September 25, 2025, the following measures will be undertaken to minimize service disruption to BC-CfE clients and providers.

  • The BC-CfE Laboratory has transitioned to private courier for delivery of outgoing reports and documents. Results required urgently can be faxed upon request. (Lab Contact Information: Phone 604-806-8775; FAX 604-806-9463)
  • The BC-CfE Drug Treatment Program (DTP) will fax outgoing forms and documents to the provider’s office. (DTP Contact Information: Phone 604-806-8515; FAX 604-806-9044)
  • St. Paul’s Hospital Ambulatory Pharmacy has transitioned to private courier for delivery of medications. We recommend requesting medication at least 2 weeks in advance in case of delivery delays, particularly to rural/remote parts of BC. (Contact Information: Phone 1-800-547-3622; FAX 604-806-8675)

During the Canada Post strike, we recommend that documents be faxed or couriered to our sites, versus utilization of regular mail service

The BC-CfE Laboratory is streamlining reporting processes for certain tests in order to simplify distribution and record-keeping, and to ensure completeness of results. Beginning September 2, 2025, results for the ‘Resistance Analysis of HIV-1 Protease and Reverse Transcriptase’ (Protease-RT) and ‘HIV-1 Integrase Resistance Genotype’ tests will be combined into a single ‘HIV-1 Resistance Genotype Report’.
For more details and example reports, please click on the button below