CD4 and AIDS: In univariable competing risks proportional hazards regression analyses, a decreased hazard of reporting a new serious non-AIDS event was significantly associated with higher nadir CD4+ T cell count (HR = 0.85 per 10-cells/mm3; 95% CI = (0.71,1.03); p = 0.094), higher baseline CD4+ T cell count (HR = 0.86 per 10-cells/mm3; 95% CI = (0.75,0.99); p = 0.030), and baseline CD4+ T cell count ≥25/mm3 (HR = 0.47; 95% CI = (0.27,0.82); p = 0.007); Table 3).