Figure 4. AIDS-free proportion between April 1, 1997 and March 31, 2002 by the use of antiretroviral therapy in the second quarter of 1997.
* 1 NRTI: treatments including only one nucleoside reverse transcriptase inhibitor.
2 NRTIs: treatments including only two nucleoside reverse transcriptase inhibitors.
2 NRTIs + 1 PI: treatments including at least two nucleoside reverse transcriptase inhibitors and one protease inhibitor.