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. Author manuscript; available in PMC: 2011 Apr 1.

Published in final edited form as: Clin Infect Dis. 2010 Apr 1;50(7):1041–1052. doi: 10.1086/651118

Time to virologic failure overall (A) and by screening plasma HIV-1 RNA level (B). Subjects whose final visit occurred after 48 weeks were included in the proportional hazards model analyses and are shown in the figure based on the actual time of last visit. The decline in the probability of not failing after 48 weeks is due to an event occurring after sharp decrease in the number of subjects at risk in this 48 week study. Only 10 subjects completed their final follow-up visit after 50 week and most subjects came in for their final visit by that time.

Time to virologic failure overall (A) and by screening plasma HIV-1 RNA level (B). Subjects whose final visit occurred after 48 weeks were included in the proportional hazards model analyses and are shown in the figure based on the actual time of last visit. The decline in the probability of not failing after 48 weeks is due to an event occurring after sharp decrease in the number of subjects at risk in this 48 week study. Only 10 subjects completed their final follow-up visit after 50 week and most subjects came in for their final visit by that time.