Table 2. The proportion of drug-resistance in ART-failure individuals according to drug classes.

Drug classesa	Cases	Proportion (%)
PIs	6	1.2
NRTIs	4	0.8
NNRTIs	76	14.8
Dual resistance to PIs and NRTIs	1	0.2
Dual resistance to PIs and NNRTIs	1	0.2
Dual resistance to NRTIs and NNRTIs	138	26.8
Multiple resistance to PI, NRTI and NNRTI	6	1.2
Susceptibility	283	55.0

Note: ^aPIs, Protease inhibitors; NRTIs, Nucleoside reverse transcriptase inhibitors; NNRTIs, Non-nucleoside reverse transcriptase inhibitors; the drug classes were exclusive of each other in the study population.