Table 1.
Description of study population at time of first-line failure, split by time to switch to second-line group.
Table 2.
Adjusted marginal structural models for hazard ratios of death after first-line failure, stratified by peak CD4 count prior to first-line failure.
Table 3.
Adjusted Cox proportional hazards ratios for confirmed failure on second-line ART stratified by peak CD4 count on treatment prior to first-line failure.