Proportions with HIV-1 RNA < 50 copies/ml after regimen simplification by baseline NK cell levels.

<p><a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0095524#pone-0095524-g002" target="_blank">Figure 2</a> shows a Kaplan-Meier plot for the survival with HIV-1 RNA level above 50 copies/mL during the A5201 study based on the participant's NK cell level at study entry. The p-value is 0.023 by Kaplan-Meier analyses for the difference at 54 weeks between the groups above and below the median NK cell level.