Positive predictive value (PPV) of clinical and immunologic criteria for identifying treatment failure among HIV-infected adults receiving first-line or second-line/other antiretroviral therapy, Nyanza Province, 2008–2011.

<p>Positive predictive value (PPV) of clinical and immunologic criteria for identifying treatment failure among HIV-infected adults receiving first-line or second-line/other antiretroviral therapy, Nyanza Province, 2008–2011.</p

Contingency table used for calculating positive predictive value.

<p>Contingency table used for calculating positive predictive value.</p

Characteristics of adults who underwent targeted viral load testing, Nyanza, Kenya, 2008–2011.

<p>Characteristics of adults who underwent targeted viral load testing, Nyanza, Kenya, 2008–2011.</p

Inclusion of study subjects with clinical or immunological indication for viral load testing for analysis.

<p>This figure describes how the subjects were excluded from this analysis. We excluded 1,119 pregnant women and 1,882 persons with unclear indications why VL testing was requested.</p