Predictors of time taken to achieve CD4 T-cells >500 cells/µl (n = 501).

*Reference category.**Others included injecting drug use, transfusion and unrecorded.#For every 100-unit increase in square transformed baseline CD4 T-cell counts, the hazard of achieving a CD4 T-cell threshold of >500cells/µl increased by 15%.cART-combination Antiretroviral therapy; MSM – men who have sex with men; NNRTI – non-nucleoside reverse transcriptase inhibitor; PI – protease inhibitor (boosted and unboosted) ; NRTI – nucleoside reverse transcriptase inhibitor; ADI – AIDS-defining illness; HBsAg – hepatitis B surface antigen; HCV Ab – hepatitis C antibody.