Abstract
In resource-limited settings, alternatives to HIV viral load testing may be necessary to monitor the health of people living with HIV. We assessed the utility of self-report antiretroviral therapy (ART) to screen for HIV viral load among persons who inject drugs in Hai Phong Vietnam, and consider differences by recent methamphetamine use. From 2016 to 2018 we recruited PWID through cross sectional surveys and collected self-report ART adherence and HIV viral load to estimate sensitivity, specificity, positive and negative predictive values (PPV, NPV) and likelihood ratios (LR+, LR-) for self-reported ART adherence as a screening test for HIV viral load. We used three HIV viral load thresholds: < 1000, 500 and 250 copies/mL; laboratory-confirmed HIV viral load was the gold standard. Among 792 PWID recruited, PPV remained above 90% regardless of recent methamphetamine use with slightly higher PPV among those not reporting recent methamphetamine use. The results remained consistent across all three HIV viral load thresholds. Our findings suggest that when HIV viral load testing is not possible, self-reported ART adherence may inform decisions about how to prioritize HIV viral load testing among PWID. The high PPV values suggest self-reported high ART adherence indicates likely HIV viral suppression, irrespective of methamphetamine use.
Original language | English (US) |
---|---|
Pages (from-to) | 553-560 |
Number of pages | 8 |
Journal | AIDS Care - Psychological and Socio-Medical Aspects of AIDS/HIV |
Volume | 36 |
Issue number | 4 |
DOIs | |
State | Published - 2024 |
Keywords
- HIV/AIDS
- Positive predictive value (PPV)
- antiretroviral therapy (ART)
- likelihood ratio
- methamphetamine
- negative predictive value (NPV)
ASJC Scopus subject areas
- Health(social science)
- Social Psychology
- Public Health, Environmental and Occupational Health