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Table 9 TB incidence in month interval among IPT completed, in-completed & non-exposed patients in public health facilities of Addis Ababa, during 2007-June 2012

From: Effectiveness of isoniazid preventative therapy in reducing incidence of active tuberculosis among people living with HIV/AIDS in public health facilities of Addis Ababa, Ethiopia: a historical cohort study

Follow up month IPT exposure/completion status IR/100 P-M (95% CI) Unadjusted IRR (95% CI) Adjusted IRR (95% CI)
<6 Completed 0 0 0
In-complete 142.8(17.64–268.07) 1.82(0.65–3.97) 2.125(0.712–5.103)
Non-exposed 78.59(66.9–90.3) 1 1
6–12 Completed 12(1.58–25.58) 0.30(0.06–0.79) 0.03(0.013–1.95)
In-completed 38.71(7.74–69.68) 0.98(0.39–2.02) 1.05(0.32–2.89)
Non-exposed 39.43(34.05–44.82) 1 1
12–24 Completed 6.74(1.35–12.14) 0.29(0.11–0.59) 0.03(0.01–0.74)
In-completed 38.71(7.74–69.68) 1.65(0.65–3.38) 1.61(0.51–4.29)
Non-exposed 23.51(20.48–26.55) 1 1
24–36 Completed 5.98(1.55–10.42) 0.34(0.14–0.66) 0.04(0.02–1.74)
In-completed 9.94(3.05–16.82) 0.56(0.25–1.05) 1.09(0.49–2.54)
Non-exposed 17.87(15.63–20.11) 1 1
37–48 Completed 5.98(1.55–10.42) 0.44(0.186–0.854) 0.74(0.301–1.56)
In-completed 9.94(3.05–16.82) 0.73(0.33–1.37) 0.72(0.314–1.44)
Non-exposed 13.72(12.04–19.56 1 1
>48 Completed 5.98(1.55–10.42) 0.50(0.22–0.99) 0.88(0.36–1.84)
In-completed 9.94(3.05–16.82) 0.84(0.38–1.58) 0.89(0.39–1.76)
Non-exposed 11.88(10.44–13.32) 1 1