By age

Data source: Ontario HIV Laboratory Cohort
 

Key points

  • The percent of people with diagnosed HIV living in Ontario who were on antiretroviral treatment (ART) increased over time for all age categories and was generally higher for people of older ages.
  • ART status is documented on viral load (VL) test requisitions by the ordering health care provider and is missing for 17 to 20% of requisitions. Those with missing data were assumed to be on ART if virally suppressed.

 

Figures

Figure 1 Percent of people with diagnosed HIV living in Ontario who were on ART by age category, 2000 to 2015


Trends: Between 2000 and 2015, the percent of people with diagnosed HIV who were on ART increased across all age categories and was generally higher for people of older ages. In 2015, the percent on ART was 68.2%, 70.1%, 78.1%, 84.1% and 86.3% for those aged 24 or younger, 25 to 34, 35 to 44, 45 to 54, and 55 or older, respectively. See Tables 1 and 2 below for data and definitions.
 

Tables and definitions

Table 1 Number of people with diagnosed HIV living in Ontario who were on ART by age category, 2000 to 2015
Year≤2425-3435-4445-54≥55
2000 157 833 2,276 1,194 415
2001 159 748 2,429 1,334 507
2002 164 746 2,559 1,486 599
2003 176 683 2,653 1,684 736
2004 176 698 2,747 1,923 841
2005 162 683 2,872 2,167 976
2006 173 721 2,927 2,445 1,163
2007 185 759 2,899 2,816 1,344
2008 192 801 2,966 3,240 1,569
2009 222 889 2,861 3,630 1,792
2010 245 993 2,796 3,954 2,002
2011 242 1,082 2,775 4,255 2,323
2012 259 1,205 2,778 4,447 2,604
2013 268 1,283 2,793 4,637 2,932
2014 276 1,373 2,718 4,774 3,300
2015 320 1,409 2,756 4,825 3,737


“on ART” definition
Documented on ART, or ART status missing and virally suppressed, on last viral load test
Table 2 Percent of people with diagnosed HIV living in Ontario who were on ART by age category, 2000 to 2015


Estimate of percent on ART “on ART” definition (numerator) “Diagnosed” definition (denominator)
Main Documented on ART, or ART status missing and virally suppressed, on last 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)

 
Notes: Data provided by Public Health Ontario Laboratories. ART status documented on viral load test requisition by ordering provider and missing for 17-20% of requisitions. Individuals missing information on sex were excluded (approximately 0.4%). Tables and Figures display main estimates only. A range of plausible values, calculated using alternative definitions, are available upon request.