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.
Survival (left) and AIDS-free survival (right) under tight- and loose-control switching strategies in the ART-CC, the CNICS and the HIV-CAUSAL Collaboration, 2002–12. The curves are standardized by the baseline covariates and inverse-probability weighted by the time-varying covariates listed under Table 4.
