Yield of household contact investigation of patients with pulmonary tuberculosis in southern Ethiopia

BMC Public Health

Table 2 Determinants of incident tuberculosis among household contacts of index TB cases (Nov 2010-Apr 2015) in Boricha District, Sidama zone

Characteristic	Response	# TB cases among HHCs^a	Person years	TB incidence per 100,000 (95% CI)	Hazard ratio^b (95% CI), adjusted	P value^b
HHC Age	Children < 15	9	1638	549 (286–1056)	1	< 0.001
HHC Age	Adults ≥15	68	3075	2211 (1743–2804)	4.03 (2.00–8.12)
HHC Gender	Female	34	2124	1601 (1144–2241)	1
HHC Gender	Male	43	2589	1661 (1232–2239)	0.99 (0.63–1.57)	0.971
Time to Diagnosis	0–12	41	1496	2740 (2018–3722)	1	0.002
	13–24	12	1469	817 (464–1439)	0.30 (0.16–0.57)
	25–36	12	1151	1043 (592–1837)	0.38 (0.20–0.72)
	36+	12	597	2007 (1140–3534)	0.68 (0.36–1.32)

ISSN: 1471-2458