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Life expectancy of HIV-positive individuals on combination antiretroviral therapy in Canada

  • Angela Cescon1,14,
  • Hasina Samji1,
  • Keith Chan1,
  • Wendy Zhang1,
  • Janet Raboud3,4,
  • Ann North. Burchell5,
  • Curtis Cooper6,
  • Marina B. Kleinvii,8,
  • Sean B. Rourke5,
  • Mona R. Loutfy9,x,xi,
  • Nima Machouf12,
  • Julio S. G. Montaner1,thirteen,
  • Chris Tsoukas7,
  • Robert S. Hogg1,two &
  • CANOC collaboration

BMC Infectious Diseases volume xv, Article number:274 (2015) Cite this article

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Abstruse

Groundwork

We sought to evaluate life expectancy and mortality of HIV-positive individuals initiating combination antiretroviral therapy (ART) across Canada, and to consider the potential error introduced by participant loss to follow-up (LTFU).

Methods

Our report used information from the Canadian Observational Cohort (CANOC) collaboration, including HIV-positive individuals anile ≥xviii years who initiated Art on or after January i, 2000. The CANOC collaboration collates data from eight sites in British Columbia, Ontario, and Quebec. We computed abridged life-tables and remaining life expectancies at age 20 and compared outcomes by calendar menses and patient characteristics at treatment initiation. To correct for potential underreporting of mortality due to participant LTFU, we conservatively estimated 30 % mortality among participants lost to follow-upwards.

Results

9997 individuals contributed 49,589 person-years and 830 deaths for a crude bloodshed rate of 16.7 [standard mistake (SE) 0.six] per yard person-years. When assigning death to xxx % of participants lost to follow-upwards, nosotros estimated 1170 deaths and a mortality charge per unit of 23.six [SE 0.7] per m person-years. The crude overall life expectancy at age 20 was 45.2 [SE 0.7] and 37.5 [SE 0.half-dozen] years after adjusting for LTFU. In the LTFU-adjusted analysis, lower life expectancy at age 20 was observed for women compared to men (32.4 [SE 1.one] vs. 39.2 [SE 0.7] years), for participants with injection drug use (IDU) history compared to those without IDU history (23.ix [SE 1.0] vs. 52.three [SE 0.8] years), for participants reporting Aboriginal ancestry compared to those with no Aboriginal beginnings (17.vii [SE ane.v] vs. 51.2 [SE one.0] years), and for participants with CD4 count <350 cells/μL compared to CD4 count ≥350 cells/μL at treatment initiation (36.three [SE 0.7] vs. 43.5 [SE 1.3] years). Life expectancy at historic period 20 in the agenda period 2000–2003 was lower than in periods 2004–2007 and 2008–2012 in the LTFU-adjusted analyses (thirty.eight [SE 0.9] vs. 38.6 [SE 1.0] and 54.2 [SE 1.4]).

Conclusions

Life expectancy and mortality for HIV-positive individuals receiving ART differ by calendar menstruum and patient characteristics at treatment initiation. Failure to consider LTFU may result in underestimation of bloodshed rates and overestimation of life expectancy.

Peer Review reports

Background

Twenty-v years since the Globe Wellness Organization announced the Global Plan on AIDS to respond to the HIV/AIDS pandemic, an HIV cure remains elusive [1]. Recent reports estimate that 35 million people live with HIV globally, and this figure continues to increment [2]. That existence said, treatment options available to individuals living with HIV have significantly improved in efficacy, safety and tolerability over the last decade. There is global consensus that combination antiretroviral therapy (ART) decreases bloodshed and morbidity among the HIV-positive population [3–5]; and new approaches in ART delivery, such as PI boosting and fixed-dose combinations, are thought to improve treatment outcomes [6]. The improving efficacy of ART regimens has resulted in the recognition of HIV as a chronic, manageable condition.

At the end of 2011 in that location were approximately 71,300 people living with HIV/AIDS in Canada [7]. Antiretroviral regimens have been available to Canadian residents eligible for treatment since the mid-1980s. Handling provision and coverage vary beyond Canada, depending on the provincial and territorial programs implemented. With improvements in treatment regimen access, uptake and efficacy, the mortality and morbidity of HIV-positive persons have significantly decreased over fourth dimension [8, 9]. However, despite widespread availability of more efficacious ART regimens, life expectancy (an important population health indicator) remains lower for HIV-positive individuals compared with the general population [8]. Additionally, other non-AIDS defining comorbidities are of increasing concern for HIV-positive individuals accessing Art; including malignancy, cardiovascular illness, pulmonary illness, liver disease, and renal disease [10, eleven]. These comorbidities are hypothesized to occur at a higher rate among people living with HIV due to immunodeficiency [10], inflammation [12], a college prevalence of behavioural risk factors [x], viral co-infections and the toxicity of antiretroviral regimens [13].

The consequence of HIV on life expectancy in the era of Art is not well explored in the Canadian context. Similarly, the effect of baseline characteristics, such equally sex and HIV manual risk grouping, on life expectancy and mortality among handling-experienced individuals has not yet been defined for our region. This analysis sought to evaluate life expectancy and mortality rates of HIV-positive individuals accessing antiretroviral regimens beyond 3 Canadian provinces, comparison outcomes in the mod treatment era past calendar year and by subgroups defined by patient characteristics at treatment initiation. In addition, we sought to consider the potential error introduced in mortality analyses due to loss to follow-up (LTFU) of cohort participants.

Methods

Data source

The Canadian Observational Cohort (CANOC) collaboration is a pan-provincial cohort of HIV-positive individuals initiating ART naively, established to evaluate patterns of treatment uptake and response, and health service provision and outcomes across Canada. CANOC consists of eight cohorts from the provinces of British Columbia, Ontario and Quebec. Each cohort site performs information extraction of demographic, laboratory and clinical variables of interest and annually submits these information to the analogous centre in Vancouver, British Columbia. A detailed CANOC contour was published in 2011 [14].

Ideals argument

Ethics lath approval of the CANOC collaboration was granted by the Simon Fraser Academy Research Ethics Board (REB) and the University of British Columbia REB. Additionally, approving from local institutional review boards (IRBs) was granted at each participating cohort site, including: Providence Health Intendance Enquiry Institute Role of Research Services, the Ottawa Infirmary REB, University Health Network (UHN) REB, Véritas IRB, Biomedical C REB of the McGill University Heath Middle (MUHC), University of Toronto HIV REB, and Women'due south Higher Hospital REB.

Written consent for study participation has been obtained from all study cohorts except: HAART Observational Medical Evaluation and Research Cohort (IRB approves the retrospective utilize of anonymous administrative data without requiring consent; an information sheet is provided in lieu of a consent form); Ottawa Hospital Accomplice, UHN and Maple Foliage Medical Clinic (IRB/REBs approve the bearding use of data retrospectively extracted from clinical care databases without requiring consent); and MUHC and the Electronic Antiretroviral Therapy Cohort (IRB/REBs approve the anonymous use of information retrospectively extracted from clinical care databases without requiring consent; patients sign a general waiver on opening a medical chart at the hospital but no specific study related consent).

Inclusion criteria

CANOC includes individuals with documented HIV infection, aged at least 18 years, and currently resident in Canada. Participation is restricted to formerly ART-naive HIV-positive individuals initiating combination Fine art on or after 1 January 2000. All participants had baseline CD4 cell count and viral load measurements (within half dozen months prior to Art initiation). This analysis included individuals enrolled in CANOC from 2000–2012.

Outcomes and statistical methods

The primary outcome of interest was appointment of death from all-causes, used to appraise bloodshed rates and life expectancy. Demographic and clinical characteristics of interest included sexual activity, Aboriginal beginnings, baseline CD4 cell count and HIV transmission group (injection drug employ (IDU) history vs. no IDU history).

This assay compared life expectancy amidst HIV-positive individuals on Art in Canada over three calendar periods, based on year of Art initiation (2000–2003, 2004–2007 and 2008–2012). Nosotros also considered differences in mortality rates and life expectancy in subgroups defined past patient characteristics at initiation of treatment. Crude and historic period-specific bloodshed rates were calculated. Bloodshed rates (per k person-years) were calculated by dividing the total number of deaths by the full number of person-years of follow-up; we report these results with standard errors, calculated using Poisson distribution. Mortality rates were stratified by sex (male vs. female), Ancient ancestry (Aboriginal vs. non-Aboriginal), HIV transmission take chances group (IDU history vs. no IDU history), and baseline CD4 count (<350 and ≥350 cells/μL). Where the data prepare was incomplete, analyses were restricted to cohort participants with not-missing data.

Abridged life tables were constructed from age-specific mortality rates to compare life expectancy at the age of 20 years in the three designated calendar periods nether study. Life expectancy at age 20 refers to the number of remaining years a participant would exist expected to alive. Abridged life tables constructed for this analysis were based on widely used and standardized methods [15]. We partitioned each individual'south total person-time contribution and deaths into five-year age categories to compute abridged life tables and life expectancies with corresponding standard errors [SE]. Due to the relatively small proportion of participants within older age categories, the final historic period category constructed within the life tables was 55+ years. Life expectancy values at the exact age of 20 years were reported for the whole cohort as well as stratified past sex activity, manual group, Aboriginal beginnings and CD4 prison cell count at treatment initiation.

Estimation of potential mistake due to LTFU

For the purposes of this assay, LTFU was defined as the last recorded known contact appointment being more than 18 months before the terminate of the report period. To right for potential misclassification of expiry amidst persons recorded as lost to follow-upwards (and differences in observation rates between private cohorts/provinces), nosotros conservatively estimated that thirty % of participants who were lost to follow-up had died. This estimate was recently used in a mortality analysis conducted within the Antiretroviral Therapy Accomplice Collaboration (Fine art-CC) [xvi], called to reflect the findings of a survey evaluating mortality amidst those lost to follow-up within the French hospital database on HIV infection (FHDH) [sixteen, 17]. Our xxx% estimate is consistent with published literature describing mortality rates amid HIV-positive participants lost to follow-upwardly in a Ugandan setting, ranging from 28–29 % [18–20], and Canadian estimates of mortality rates among HIV-hepatitis C co-infected participants lost to follow-upwardly, reported at 40 % [21].

Amidst participants not lost to follow-up, a multivariable logistic regression model (containing demographic and clinical characteristics) was created, with death as the outcome variable. The resulting parameter estimates were so practical to those lost to follow-up, which generated estimated probabilities of death for these lost patients, of which the highest 30 % were categorized every bit deaths. Date of death was recorded as the last contact date for participants lost to follow-up who were assigned the consequence.

Results

Baseline characteristics of the 9997 participants inside the analytic sample are presented in Tabular array 1. The accomplice was predominantly male (82 %), with a history of IDU reported by 27 % of participants. The median baseline age was xl (interquartile range (IQR): 33–47), with 10 % of participants reporting Ancient ancestry. Of the 9350 participants with available data on hepatitis C condition, 26 % were hepatitis C positive. Notably, among participants with a history of IDU the prevalence of hepatitis C infection was 82 %, compared to 7 % among participants with no IDU history (p < 0.001).

Tabular array one Demographic and clinical characteristics of participants, overall and by calendar year of ART initiation (northward = 9997)

Full size table

Loss to follow-up

The median follow-upward fourth dimension within the cohort was 52 months (IQR: 24–89). Overall, xi % of all participants were lost to follow-upwards during the written report menstruation. Table 2 compares the clinical and sociodemographic characteristics at treatment initiation for participants retained within the cohort and participants lost to follow-up. Participants lost to follow-up were more probable to be female, report no IDU history, report no Aboriginal beginnings and have a CD4 count <350 cells/μL at handling initiation, as compared to participants retained in the cohort (all p <0.05). Tabular array 3 compares the clinical and sociodemographic characteristics at treatment initiation for participants lost to follow-up who were assigned and non assigned the event death. Participants assigned the outcome decease were more probable to written report IDU history and Aboriginal ancestry, and accept a CD4 count <350 cells/μL at handling initiation (all p < 0.001). In all analyses, adjusting for bloodshed among cohort participants lost to follow-up decreased the estimated life expectancy and increased the estimated mortality rate, as expected.

Table 2 Clinical and sociodemographic characteristics at treatment initiation for participants retained within the cohort and participants lost to follow-upwardly (due north = 9997)

Full size tabular array

Tabular array 3 Clinical and sociodemographic characteristics at treatment initiation for participants assigned to the upshot death and not assigned to death amongst those lost to follow-up (due north = 1132)

Full size table

Mortality

9997 individuals contributed 49,589 person-years and 830 deaths for an overall crude mortality rate of 16.74 [SE 0.58] per g person-years (Tabular array iv). Afterwards estimating 30 % mortality among participants lost to follow-up, in that location were 1170 deaths, with a mortality rate of 23.59 [SE 0.69] per 1000 person-years. Unadjusted and adjusted mortality rates, overall and by select characteristics, are presented in Table 4. In both unadjusted and LTFU adjusted analyses, female person sex, IDU history, Aboriginal beginnings and CD4 count of <350 cells/μL at handling initiation were significantly associated with increased mortality.

Table four Population size, deaths, and unadjusted and adjusted mortality rate per yard person-years (PY), overall and by select characteristics

Total size table

Life expectancy

Unadjusted life expectancy at age twenty was 45.two [SE 0.66], and 37.5 [SE 0.61] years after estimating 30 % bloodshed among those lost to follow-upwards (Table 5). In both unadjusted and LTFU adjusted analyses, female sex activity, IDU history, Aboriginal ancestry and CD4 count of <350 cells/μL at treatment initiation were significantly associated with decreased life expectancy at historic period twenty (Table v, Fig. i).

Table five Life expectancy estimates at age 20 years, showing unadjusted and adjusted values (bold 30 % bloodshed among those lost to follow-up), due north = 9997

Full size table

Fig. 1
figure 1

Life expectancy estimates at age 20 years, showing unadjusted and adjusted values, past clinical and sociodemographic characteristics at baseline

Full size image

Temporal trends

Both life expectancy and mortality rates improved over time (Tables 4 and v, Fig. 1). Mortality rates decreased within more recent time periods, both before and later adjusting for mortality among participants lost to follow-up (Table iv). Life expectancy at age 20 increased within more than recent time periods in both the unadjusted and adapted analyses, reaching a maximum life expectancy of 54.2 [SE i.37] years in the menses 2008–2012, after adjusting for bloodshed amidst participants lost to follow-up (Table 5).

Sensitivity assay

Given that simply 8.6 % (n = 861) of our analytic sample was aged 55+ years (contributing a total of 3903.eight person-years of follow-upwardly) we were concerned that mortality rates amid participants inside this age category, especially at the oldest ages, may be underestimated, potentially inflating the life expectancy estimates generated. To explore this issue, we conducted a sensitivity analysis using 2006 mortality data for the full general Canadian population to obtain revised life expectancy estimates [22]. We assumed that the rise in the mortality rate between participants anile l–54 and participants aged 55+ years in our analytic sample would increase by the same ratio as that demonstrated within the general Canadian population of corresponding age categories. Based on this assumption, we extrapolated the bloodshed rates observed among study participants aged 50–54 to produce new bloodshed estimates for participants anile 55+ years. After performing this adjustment, the overall life expectancy at historic period 20 decreased from 45.ii [SE 0.7] years to 31.7 [SE 0.4] years (Boosted file 1).

Discussion

The largest of its kind conducted in Canada to appointment, our study contributes a number of important findings on life expectancy among HIV-positive persons in this region. Specifically, we observed that life expectancy and mortality for HIV-positive individuals accessing ART differ by sex, IDU history, Aboriginal ancestry, baseline CD4 cell count prior to ART initiation, and calendar flow of ART initiation. Additionally, this manuscript employs a novel methodological approach to life expectancy analyses; questioning the validity of cohort studies that fail to account for mortality among participants lost to follow-up and those that lack sufficient follow-up data among older individuals accessing treatment.

Life expectancy within this cohort improved with more recent agenda periods. This finding has been previously reported in the literature, and likely reflects improved coverage and quality of Fine art regimes and HIV care [iv, 5, 23, 24]. Contempo reports estimate the average remaining life expectancy for Canadians at age 20 to exist 59.vii and 63.9 years for men and women, respectively [25]. When compared with the findings of our report, it is clear that despite advances in the health intendance services and antiretroviral therapies bachelor to people living with HIV in Canada, the life expectancy of HIV-positive Canadians remains lower than that of the general population.

Men demonstrated longer life expectancy and lower mortality rates compared to women in this accomplice. This is in contrast to population-level surveillance data published past Statistics Canada, reporting increased life expectancy among women compared with men in the full general population in all Canadian provinces [26]. A recent publication evaluating regional and sex specific patterns of HIV/AIDS mortality in Canada from 1987-2008 plant that historic period-specific expiry rates among women in well-nigh age categories were lower than those observed amidst men [27]. Nevertheless, this study observed that the turn down in HIV-related mortality rates since the mid-1990s was much more pronounced among men than women. North American publications evaluating mortality in HIV-positive cohorts accessing Art have demonstrated comparable sexual practice-related differences to those shown in our study [9, 28, 29]. However, mortality analyses conducted in European and trans-continental settings have observed contrasting sexual activity differences among HIV-positive cohorts, depicting a longer life expectancy among women than men [eight, 30, 31]. Other studies have constitute no sex-related differences [32].

These inconsistencies may be due to inherent differences in cohort demographics, treatment access and healthcare utilization. A contempo publication commented on the validity of cross-cohort comparisons of bloodshed rates, suggesting that cohort characteristics in different settings tin significantly alter HIV outcomes, including mortality [16]. In recent years, Canadian studies have reported disparities in retentiveness within key stages of the HIV treatment cascade, including access and adherence to treatment and achievement of viral suppression, according to region of care [33], sex activity and IDU history [33, 34]. In these studies, women and individuals with a history of IDU demonstrated decreased retention within the HIV treatment cascade in Canada [33, 34]. In CANOC, a disproportionate number of HIV-positive individuals reporting IDU history are women, which reflects the composition of the Canadian HIV epidemic, especially in British Columbia.

Individuals with a history of IDU demonstrated poor mortality and life expectancy outcomes in this analysis. This finding has been consistently reported in the published literature [8, ix, 23, 29, 35]. Previous studies have shown that the increased mortality rates amid persons with IDU history primarily reflect college rates of all-cause bloodshed, rather than HIV-related bloodshed [35, 36]. Indeed this demographic group experiences a loftier prevalence of comorbidities, augmented past potential active drug use, socioeconomic disadvantage and poor access to health care services [36]. In our written report cohort, a significantly higher prevalence of hepatitis C infection was identified among participants with a history of IDU compared to individuals with no IDU history. Infection with hepatitis C is an of import correspondent to mortality and morbidity among people living with HIV, primarily due to an increased risk of liver disease [37, 38]. A contempo Canadian cohort study reported notably college bloodshed rates amidst individuals co-infected with HIV and hepatitis C compared to previously published mortality rates among mono-infected HIV-positive individuals [39].

CD4 cell count at handling initiation was another pregnant predictor of bloodshed and life expectancy in our cohort. Participants with CD4 prison cell counts <350 cells/μL at treatment initiation demonstrated increased bloodshed rates and decreased life expectancy. This finding is consistent with previous mortality studies [8, 9], and reinforces the long-term wellness benefits of ART initiation earlier in the course of HIV infection. Earlier ART initiation is supported by the 2014 International Antiviral Society-The states guidelines, recommending the initiation of antiretroviral therapy regardless of CD4 cell count for virtually patients [40].

In our analysis, we found Ancient ancestry to be predictive of decreased life expectancy. This is consequent with a Canadian retrospective cohort study published in 2011, which reported that individuals of Aboriginal descent receiving ART demonstrate increased all-crusade and HIV-related mortality rates compared with non-Ancient people living with HIV in Canada [35]. This observation may be due to competing life circumstances and social-structural factors that influence access and adherence to Art amidst Aboriginal persons [35]. A report by Statistics Canada similarly identified this deviation in life expectancy between Canadians of Ancient ancestry and the non-Aboriginal population [41]. This observation is apropos, and initiatives to ameliorate treatment outcomes of Aboriginal Canadians should exist made a priority. To note, this finding may be influenced by underlying characteristics of our cohort, equally a disproportionate number of HIV-positive individuals reporting IDU history in CANOC besides report Aboriginal ancestry.

Large-scale longitudinal accomplice studies often face up a pregnant limitation in the grade of incomplete information due to participant LTFU. LTFU affects near accomplice studies and can event in bias, affecting study validity [42]. In conducting this study we sought to account for the impact of LTFU on life expectancy estimates to reduce potential bias and amend the validity of our findings. Later conservatively estimating 30 % mortality among participants lost to follow-up, unsurprisingly nosotros observed that mortality rates increased and life expectancy estimates decreased. This suggests that failure to account for participant lost to follow-upwards in mortality analyses results in the potential for pregnant underestimation of bloodshed rates and overestimation of life expectancy data, affecting data validity.

Limitations

Several limitations of this report should be acknowledged. CANOC includes data from only three Canadian provinces, and participants included are already linked to specific health intendance facilities, therefore the analytic sample is not be fully representative of the overall HIV-positive population beyond Canada, including those almost at risk of adverse clinical outcomes. Data from British Columbia include all CANOC-eligible HIV-positive individuals in the province accessing ART, whereas information from Ontario and Quebec are collected from a selection of clinics, which may introduce a clinic-selection bias. This written report considers the Canadian HIV-positive population, therefore observations described may not exist generalizable to other global settings.

We conducted an adjusted assay to account for misclassification of mortality among participants lost to follow-upwards, conservatively estimating the expiry of thirty % of those lost to follow-up. As published information concerning mortality amongst participants lost to follow-up in Canadian cohorts are limited, this estimate was based on previous European [17] and Ugandan studies amid HIV-positive cohorts [18–20] and findings from a Canadian cohort of HIV-hepatitis C co-infected individuals [21]. Therefore, this approximate may non be entirely generalisable to all HIV-positive individuals in Canada. Further studies may seek to evaluate how accurate our assumption was regarding mortality amongst HIV-positive participants lost to follow-up in this setting. Differences in mortailty ascertainment past site too be, and thus our interpretation of mortality may be more problemetic at sites that do not link to vital statistics registries.

Another potential limitation of this study was that we did not allow for censoring in LTFU data. This is specially relevant for those who initiated ART in the most recent time menses; in some cases not enough time had passed to be declared lost to follow-upwardly given the 18-month definition. Unfortunately, data describing causes of expiry are not currently collected across participating cohorts in the CANOC collaboration; as such we were unable to present the distribution of causes of death within this manuscript.

Given that just a small proportion of our analytic sample was aged ≥55 years, nosotros conducted a sensitivity assay based on mortality rates within the general Canadian population to explore whether possible underestimation of bloodshed rates amidst participants inside this age category affected the life expectancy values generated. The results suggested that our life expectancy estimates may be overestimated due to imprecise representation of mortality rates within older age categories. Every bit the Canadian population living with HIV ages, the reliability of results generated by life expectancy analyses such as this will continue to better.

Conclusion

In determination, this study found that while both mortality rates and life expectancy for HIV-positive Canadians accessing ART are improving over time, they remain beneath that of the general Canadian population. Life expectancy and mortality are influenced past baseline characteristics at handling initiation, including Aboriginal ancestry, sexual activity, CD4 cell count and IDU history. These findings advise the need for targeted interventions for patient subgroups at increased run a risk of adverse outcomes. Time to come studies examining patterns of life expectancy and mortality among HIV-positive populations should take into account bloodshed among participants lost to follow-up to ensure validity of estimates.

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Acknowledgements

Nosotros would like to give thanks all of the participants for allowing their information to exist a function of the CANOC collaboration. We would too like to thank James Nakagawa for his piece of work on Effigy 1.

Author information

Affiliations

  1. British Columbia Centre for Excellence in HIV/AIDS, Vancouver, Canada

    Sophie Patterson, Angela Cescon, Hasina Samji, Keith Chan, Wendy Zhang, Julio S. G. Montaner & Robert S. Hogg

  2. Faculty of Wellness Sciences, BLU 9512, Simon Fraser Academy, 8888 Academy Drive, Burnaby, BC, V5A 1S6, Canada

    Sophie Patterson & Robert S. Hogg

  3. Dalla Lana School of Public Health, University of Toronto, Toronto, Canada

    Janet Raboud

  4. Sectionalisation of Infectious Diseases, University Health Network, Toronto, Canada

    Janet Raboud

  5. Ontario HIV Treatment Network, Toronto, Canada

    Ann N. Burchell & Sean B. Rourke

  6. The Ottawa Infirmary Partition of Infectious Diseases, University of Ottawa, Ottawa, Canada

    Curtis Cooper

  7. Faculty of Medicine, McGill University, Montreal, Canada

    Marina B. Klein & Chris Tsoukas

  8. The Montreal Chest Institute, McGill University Health Eye, Montreal, Canada

    Marina B. Klein

  9. Faculty of Medicine, University of Toronto, Toronto, Canada

    Mona R. Loutfy

  10. Maple Leafage Medical Clinic, Toronto, Canada

    Mona R. Loutfy

  11. Women's College Research Institute, Toronto, Canada

    Mona R. Loutfy

  12. Clinique Medicale l'Actuel, Montreal, Canada

    Nima Machouf

  13. Faculty of Medicine, University of British Columbia, Vancouver, Canada

    Julio S. Yard. Montaner

  14. Northern Ontario School of Medicine, Sudbury, Ontario, Canada

    Angela Cescon

Consortia

CANOC collaboration

Corresponding authors

Correspondence to Sophie Patterson or Robert S. Hogg.

Additional information

Competing involvement

CANOC is funded by the Canadian Institutes of Health Research (CIHR) through a Centres Grant (Centres for HIV/AIDS Population Wellness and Wellness Services Research [CIHR 711314]), two Operating Grants (HIV/AIDS Priority Announcement [CIHR 711310]; Population and Public Wellness [CIHR 711319]), and is also supported past the CIHR Canadian HIV Trials Network (CTN 242). ANB is supported by a CIHR New Investigator Laurels. Air-conditioning is supported through a CANOC Centre Scholar Award. CC is supported through an Applied HIV Inquiry Chair from the OHTN. RSH is supported by a University Professorship at Simon Fraser Academy. MBK is supported past a Chercheur-Boursier Clinicien Senior Career Award from the Fonds de recherche en santé du Québec (FRSQ). MRL receives salary back up from CIHR. JSGM is supported by an Advanced Honor from the National Establish on Drug Abuse, National Institutes of Health. SP is supported by a Study Away Studentship from the Leverhulme Trust. JR is supported through an OHTN Chair in Biostatistics.

Authors' contributions

All authors contributed to this study, as required by the International Committee of Medical Journal Editors. RSH, SP, Air conditioning, KC, and HS were involved in the formulation and design of the study. RSH, JR, AB, CC, MBK, SBR, MRL, NM, JSG and CT were involved in data acquisition, KC, WZ and RSH conducted the data analysis, and KC, Air-conditioning, HS, SP, WZ and RSH were responsible for data interpretation. SP, AC and HS drafted the initial manuscript, and all authors revised the document critically and gave final approval prior to completion. All authors accept responsibility for the accuracy and integrity of this piece of work.

Authors' information

The CANOC Collaborative Research Middle includes: Primary Investigator: Robert Hogg (British Columbia Heart for Excellence in HIV/AIDS, Simon Fraser University) Site Master Investigators: Ann N. Burchell (Ontario HIV Treatment Network, University of Toronto, OHTN Cohort Report [OCS]), Curtis Cooper (Academy of Ottawa, OCS), Deborah Kelly (Memorial University of Newfoundland), Marina Klein (Montreal Chest Institute Immunodeficiency Service Cohort, McGill University), Mona Loutfy (University of Toronto, Maple Leaf Medical Clinic, OCS), Nima Machouf (Clinique Medicale fifty'Actuel, Université de Montréal), Julio Montaner (British Columbia Centre for Excellence in HIV/AIDS, University of British Columbia), Janet Raboud (Academy of Toronto, University Health Network, OCS), Chris Tsoukas (McGill Academy), Stephen Sanche (Academy of Saskatchewan), Alexander Wong (University of Saskatchewan) Co-Principal Investigators: Tony Antoniou (St. Michael'south Hospital, University of Toronto, Institute for Clinical Evaluative Sciences), Ahmed Bayoumi (St. Michael's Hospital, University of Toronto), Mark Hull (British Columbia Eye for Excellence in HIV/AIDS), Bohdan Nosyk (British Columbia Centre for Excellence in HIV/AIDS, Simon Fraser University) Co-Investigators: Angela Cescon (Northern Ontario Schoolhouse of Medicine), Michelle Cotterchio (Cancer Intendance Ontario, Academy of Toronto), Charlie Goldsmith (Simon Fraser Academy), Silvia Guillemi (British Columbia Centre for Excellence in HIV/AIDS, University of British Columbia), P. Richard Harrigan (British Columbia Middle for Excellence in HIV/AIDS, Academy of British Columbia), Marianne Harris (St. Paul's Hospital), Sean Hosein (CATIE), Sharon Johnston (Bruyère Research Institute, Academy of Ottawa), Claire Kendall (Bruyère Research Institute, Academy of Ottawa), Clare Liddy (Bruyère Research Plant, University of Ottawa), Viviane Lima (British Columbia Centre for Excellence in HIV/AIDS, Academy of British Columbia), David Moore (British Columbia Centre for Excellence in HIV/AIDS, University of British Columbia), Alexis Palmer (British Columbia Centre for Excellence in HIV/AIDS, Simon Fraser Academy), Sophie Patterson (British Columbia Centre for Excellence in HIV/AIDS, Simon Fraser University), Peter Phillips (British Columbia Centre for Excellence in HIV/AIDS, University of British Columbia), Anita Rachlis (University of Toronto, OCS), Sean B. Rourke (Academy of Toronto, OCS), Hasina Samji (British Columbia Centre for Excellence in HIV/AIDS), Marek Smieja (McMaster Academy), Benoit Trottier (Clinique Medicale 50'Actuel, Université de Montréal), Mark Wainberg (McGill University, Lady Davis Institute for Medical Research), Sharon Walmsley (University Health Network, University of Toronto) Collaborators: Chris Archibald (Public Health Agency of Canada Centre for Communicable Diseases and Infection Control), Ken Clement (Canadian Ancient AIDS Network), Monique Doolittle-Romas (Canadian AIDS Society), Laurie Edmiston (Canadian Treatment Activity Council), Sandra Gardner (OHTN, University of Toronto, OCS), Brian Huskins (Canadian Treatment Activeness Council), Jerry Lawless (Academy of Waterloo), Douglas Lee (University Health Network, Academy of Toronto, ICES), Renee Masching (Canadian Aboriginal AIDS Network), Stephen Tattle (Canadian Working Grouping on HIV & Rehabilitation), Alireza Zahirieh (Sunnybrook Health Sciences Centre) Analysts and Staff: Claire Allen (Regina General Hospital), Stryker Calvez (SHARE), Guillaume Colley (British Columbia Centre for Excellence in HIV/AIDS), Jason Chia (British Columbia Centre for Excellence in HIV/AIDS), Daniel Corsi (The Ottawa Hospital Immunodeficiency Clinic, Ottawa Hospital Research Constitute), Louise Gilbert (Allowed Deficiency Treatment Middle), Nada Gataric (British Columbia Centre for Excellence in HIV/AIDS), Alia Leslie (British Columbia Centre for Excellence in HIV/AIDS), Luciana Light (OHTN), David Mackie (The Ottawa Hospital), Costa Pexos (McGill University), Susan Shurgold (British Columbia Center for Excellence in HIV/AIDS), Leah Szadkowski (University of Toronto, University Wellness Network), Chrissi Galanakis (Clinique Médicale L'Actuel), Benita Yip (British Columbia Centre for Excellence in HIV/AIDS), Jamie Younger (University of Toronto, University Health Network), and Julia Zhu (British Columbia Centre for Excellence in HIV/AIDS).

Additional file

Additional file 1:

Life expectancy estimates at historic period 20 years, showing unadjusted values, estimates adjusted for bloodshed amongst participants lost to follow-up, and estimates adjusted to account for low proportion of participants aged ≥55 years, based on 2006 Canadian mortality data ( north  = 9997).

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Patterson, Due south., Cescon, A., Samji, H. et al. Life expectancy of HIV-positive individuals on combination antiretroviral therapy in Canada. BMC Infect Dis xv, 274 (2015). https://doi.org/10.1186/s12879-015-0969-ten

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Keywords

  • Life expectancy
  • Mortality
  • HIV
  • Antiretroviral therapy
  • CANOC
  • Canada

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