CD4 and tuberculosis: In bivariate analysis, being a non-South African (RR 1.42; 95% CI 1.04–1.92), lack of formal education (RR 2.06; 95% CI 1.36–3.11), and low CD4 (≤50 vs. >250 cells/mm3; RR 2.22; 95% CI 1.24–3.96) were associated with increased risk of failed linkage to TB care (Table 3).