Patient Characteristics by Duration of Second-Line Treatment Failure.

a<p>Time from 2 L initiation, or last suppressed VL on 2 L, to genotype sample.</p>b<p>Numbers represent: Median (IQR) unless otherwise indicated.</p>c<p>Time from 2 L initiation to genotype sample.</p

Characteristics for Patients who Initiated Third-Line ART.

c<p>Results represent median (IQR) except where indicated.</p>d<p>Time from 2 L initiation, or last suppressed VL on 2 L, to genotype sample.</p

Prevalence of reverse transcriptase mutations.

<p>(A) NRTI resistance mutations; thymidine analog mutations (TAMs) are in light grey. (B) NNRTI resistance mutations; minor mutations indicated by light grey.</p

Accumulation of Protease Mutations According to Duration of Second-Line Treatment Failure.

<p>Accumulation of Protease Mutations According to Duration of Second-Line Treatment Failure.</p