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

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