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. 2014 Aug 8;9(8):e104557. doi: 10.1371/journal.pone.0104557

Figure 1. Cohort profile of study population, SNNP region, Ethiopia, September 2007 to August 2010.

Figure 1

Of 7,097 patients enrolled in chronic HIV care, 5,407 were eligible for analysis contributing a total of 11,290 PY of follow-up. These were further classified into six treatment categories based on the combination of treatment received, IPT and/or ART, as well as the timing of IPT initiation with respect to ART. There were 295 incident TB cases diagnosed in the study period. IPT-Isoniazid Preventive Therapy; ART-antiretroviral therapy; TB-Tuberculosis; HIV-Human Immunodeficiency virus; PY-person year. * ‘No IPT NO ART’ group is equivalent to no intervention group.