CD4 and tuberculosis: We hypothesized that the odds of having unsuppressed viral load is not only associated with clinical variables such as CD4 cell count and ART uptake, but is also influenced by socio-economic (year of study, education level, being away from home for more than 1 month) and behavioural factors (alcohol consumption, number of sex partners last 12 months), medical history (ever tested for TB and on medication to prevent TB), and knowledge of HIV testing and perceived risk (knowledge of HIV status, ever tested for HIV, and perceived risk of contracting HIV) variables.