By health region

Data source: Ontario HIV Laboratory Cohort
 

Key points

  • Individuals in the Ontario HIV Laboratory Cohort were considered to be in care if they received at least one viral load (VL) test in a given year.
  • Health regions are aggregations of public health units and their boundaries. See Technical Notes for more information.
  • Health region data is only available from 2011 onwards, as address of residence was not collected prior to that year. For this reason, the figures below only present data for the year 2015. Data from 2011 to 2015 are available in the tables at the end of the page.
  • The percent of people with diagnosed HIV living in Ontario who were in care increased slightly over time for all health regions and was generally lower among people in the Northern region and slightly lower for those in Ottawa.
  • Similarly, time from HIV diagnosis to linkage to care was generally lower among people in the Northern region and slightly lower for those in Ottawa.

 

Figures

Figure 1 Percent of people with diagnosed HIV living in Ontario who were in care by health region, 2015


Trends: In 2015, the percent of people with diagnosed HIV who were in care was highest in the South West and lowest in the Northern health region. See Tables 1 and 2 below for definitions and data from 2011 to 2015.


Figure 2 Percent of people newly diagnosed with HIV in Ontario who linked to care within three months of diagnosis by age category, 2012-2014 (combined)


Trends: The percent of people newly diagnosed in 2012 to 2014 (combined) who linked to care within three months of diagnosis was highest in Eastern and lowest in the Northern health region. See Table 3 below for data and definitions.
 

Tables and definitions

Table 1 Number of people with diagnosed HIV living in Ontario who were in care by health region, 2011 to 2015


“In care” definition
At least one viral load test in a given year

Table 2 Percent of people with diagnosed HIV living in Ontario who were in care by health region, 2011 to 2015


Estimate of percent in care “In care” definition (numerator) “Diagnosed” definition (denominator)
Main At least one viral load test (See Table 1 above for data) Nominal HIV-positive diagnostic test or HIV viral load test, and not administratively lost to follow-up after 2 years (See Table 2 here for data)

Table 3 Percent of people newly diagnosed with HIV in Ontario who linked to care within three months of HIV diagnosis by health region, 2012 to 2014


Estimate of percent linked to care “Linked to care” definition (numerator) “Newly diagnosed” definition (denominator)
Main First viral load test within three months of HIV diagnosis (Data not shown) Nominal HIV-positive diagnostic test and no evidence of previous diagnosis (i.e. no detectable viral load test or CD4 count before diagnosis date, and first VL after diagnosis not virally suppressed) (Data not shown)

 
Notes: Data provided by Public Health Ontario Laboratories. Diagnoses assigned to a health region based on their address of residence or, if unknown, the address of the ordering provider. Individuals living out of province (approximately 1% each year) or with missing health region (approximately 0.1% each year) were excluded. Tables and Figures display main estimates only. A range of plausible values are available upon request.