Fig. 1

HIV-associated TB patients in subgroups defined according to the baseline status of ART use at the time of their TB diagnosis in Serowe/Palapye district Botswana 2013. The 3 subgroups of patients were categorised based on their ART status at the time of their TB diagnosis: 1) ART naïve: not on ART at TB diagnosis, 2) On ART> = 3 months: had been on ART for > = 3 months prior to their TB diagnosis, 3) On ART< 3 months: had been on ART for < 3 months at the time of their TB diagnosis. ART: antiretroviral therapy