Table 2.

Tuberculosis (TB) incidence rates according to duration of antiretroviral therapy (per 100 person years).

ART Duration (month)	TB Episodes	Person Year at risk	Rate [95% CI] (per 100 PY)
0 – 2	93	537	17.3 [14.0 to 2.13]
2 – 6	80	1087	7.4 [5.84 to 9.16]
6 – 12	38	1529	2.4 [1.76 to 3.41]
12 – 24	56	2806	2.0 [1.51 to 2.59]
> 24	88	10227	0.9 [0.69 to 1.06]
Overall	355	16185	2.2 [1.97 to 2.43]