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. 2017 Jul 19;65(10):1670–1675. doi: 10.1093/cid/cix600

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© The Author 2017. Published by Oxford University Press for the Infectious Diseases Society of America.

This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs licence (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial reproduction and distribution of the work, in any medium, provided the original work is not altered or transformed in any way, and that the work is properly cited. For commercial re-use, please contact journals.permissions@oup.com

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Figure 3. — Accuracy of the interferon-γ–inducible protein 10 model for identifying patients with detectable viral load according to the observed prevalence of individuals on antiretroviral therapy with detectable viremia. A, Positive predictive value (PPV) estimated for sensitivity (Se) = 91.9% and 3 different specificity (Sp) scenarios according to the estimated confidence interval (Sp = 59.9% [95% confidence interval, 52.0%–67.4%]). B, Negative predictive value (NPV) estimated for specificity = 59.9% and 3 different sensitivity scenarios according to the estimated confidence interval (Se = 91.9% [95% CI, 83.9%–96.7%]). Dashed/dotted line indicates PPV and NPV at the prevalence of detectable VL observed in the cross-sectional resistance study [16].