De tilsvarende tal var 54% for de patienter, der blev behandlet med Sustiva og indinavir, og 45% for de patienter, der blev behandlet med indinavir, lamivudin og zidovudin.  I den anden undersøgelse virkede Sustiva i kombination med nelfinavir bedre end kombinationen uden Sustiva:
All of the studies showed that combinations including Sustiva were at least as effective as the comparator medicines:  the first study showed that 67% of the adults treated with Sustiva in combination with zidovudine and lamivudine had viral loads below 400 copies/ ml after 48 weeks, compared with 54% of the patients treated with Sustiva and indinavir, and 45% of the patients treated with indinavir, lamivudine and zidovudine;  in the second study, Sustiva in combination with nelfinavir was superior to the combination without Sustiva: