Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Projected Retention Rates Over Time in Antiretroviral Therapy Programs in Sub-Saharan Africa Using Varying Assumptions*. *Best-case scenario uses last observation carried forward and assumes no additional attrition after the last time point reported to. Worst-case scenario assumes a continued linear decline from the last time point reported to through 36 months. The mid-point scenario is the average of the best and worst-case scenarios. Studies are weighted by their sample size.
