Kaplan-Meier curves (figure 3andfigure 4) show that patients with baseline CD4 cell count > 50 cells/μL (p=0.002) and without active tuberculosis at enrollment (p=0.02) had increased probability of remaining in care In an extended Cox model patients with baseline CD4 cell count < 50 cells/μL were 2.3 times more likely than those with baseline CD4 cell count > 50 cells/μL to be lost from the program in the first 6 months after HAART initiation (adjusted hazard ration (aHR)= 2.3; 95% CI 1.4 – 3.7) (table 3). Here, CD4 is linked to tuberculosis.