CD4 and pulmonary tuberculosis: Also, patients with a baseline CD4 cell count >50 cells/mm3 survived longer (82.6 months, 95% CI: 79.6–86.4) than patients whose baseline CD4 cell count was <50 cells/mm3 (37.6 months, 95% CI: 32.7–42.4), and patients who had not suffered from pulmonary TB had longer survival times (70.3 months, 95% CI: 66.2–74.3) than those who had suffered from pulmonary TB (92.0 months, 95% CI: 85.5–98.6) (see Table 3).