CD4 and AIDS: Of the other potential factors, lower CD4 count at last paediatric care visit [adjusted hazard ratio (aHR) (95% CI) = 0.8 (0.7–1.0)/100 cells/μL increase, P = 0.03] and an AIDS diagnosis in paediatric care [aHR = 2.7 (1.4–5.5), P = 0.004] remained significant after adjustment for other factors.