Association between opioid agonist therapy use and HIV testing uptake among people who have recently injected drugs: a systematic review and meta-analysis

Claire F Ferraro, Daniel E Stewart, Jason Grebely, Lucy Thi Tran, Shally Zhou, Carla Puca, Behzad Hajarizadeh, Sarah Larney, Thomas Santo, Julian P T Higgins, Peter T Vickerman, Louisa Degenhardt, Matt Hickman, Clare E French*

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

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Abstract

Background and aim
Globally, nearly one in five people who inject drugs (PWID) are living with HIV, and the rate of new HIV infections in PWID is increasing in some settings. Early diagnosis is crucial for effective HIV control. We reviewed the evidence on the association between opioid agonist therapy (OAT) and HIV testing uptake among PWID.
Methods
We conducted a systematic review searching MEDLINE, Scopus, Web of Science, Cochrane Central Register of Controlled Trials, and PsycINFO for studies published January 2000 to March 2019. Reference lists and conference proceedings were hand‐searched. Observational and intervention studies were eligible for inclusion. Risk of bias was assessed using the Risk of Bias in Non‐Randomised Studies of Interventions (ROBINS‐I) tool. Meta‐analyses were conducted using random‐effects models.
Results
Of 13,373 records identified, 11 studies from Australia, Europe, Malaysia, and USA were included. All studies had at least a serious risk of bias, largely due to confounding and selection bias, making it difficult to draw causal conclusions from the evidence. Ten studies provided data on the association between current OAT use and recent HIV testing. Six showed a positive association while four provided little evidence of an association ‐ pooled odds ratio (OR): 1.71 (95% CI: 1.28‐2.27). Looking at having ever been on OAT and having ever been HIV tested, seven studies showed a positive association and three showed either weak or no evidence of an association ‐ pooled OR: 3.82 (95% CI: 2.96‐4.95).
Conclusions
Opioid agonist therapy may increase uptake of HIV testing among people who inject drugs, providing further evidence that opioid agonist therapy improves the HIV treatment care cascade.
Original languageEnglish
Number of pages13
JournalAddiction
Early online date3 Nov 2020
DOIs
Publication statusE-pub ahead of print - 3 Nov 2020

Keywords

  • HIV/AIDS
  • injecting drug users
  • meta-analysis
  • methadone
  • opioid agonist therapy
  • systematic review

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