Selvom undersøgelse 542 ikke viste statistisk signifikante forskelle mellem de to regimer med hensyn til effekt i en overvejende antiretroviral naiv population, kendes signifikansen af disse fund for antiretrovirale behandlede patienter ikke.
Although study 542 showed no statistically significant differences between the two regimens in efficacy in a predominantly antiretroviral naïve patient population, the significance of these findings for antiretroviral experienced patients is unknown.