Antiretroviral treatment (ART) outcome at month six (a) and 12 (b) for 874 patients.

The number of patients with treatment outcome data at month six and 12 were: Tikur Anbessa Specialized Hospital (TASH): 109, 105; Army: 101, 80; Gondar: 133, 113; Jimma: 109, 80; Mekelle: 119, 97; Harrar: 107, 70; Hawassa: 129, 98. Virologic failure = VL> 1000 copies/ml; LTFU = lost-to-follow-up due to death and other reasons; ART failure = virologic failure plus LTFU.