Table 4.

Poisson regression with multilevel analysis of the determinants of TB incidence in Northern Tanzania.

Characteristics	Survival status		Crude hazard ratio (95%C)	Adjusted hazard ratio (95%CI) adjusting only for clusters	AHR (95% CI) adjusting for other factors and for clusters
	event
	(TB) censored
Age
15–24	28	8,425	1	1	1
25–34	98	21,052	1.16 (0.75–1.74)	1.19 (0.78–1.81)	1.01 (0.28–3.70)
35–44	143	26,138	0.95 (0.63–1.42)	0.97 (0.65–1.46)	0.46 (0.12–1.75)
55–55	92	15,251	0.87 (0.57–1.33)	0.89 (0.58–1.36)	0.52 (0.13–2.11)
Above 55	44	7,477	0.75 (0.47–1.21)	0.78 (0.48–1.25)	0.60 (0.13–2.77)
Sex
Male	188	21,795	1	1	1
Female	217	56,547	0.43 (0.36–0.52)	0.42 (0.34–0.50)	0.89 (0.41–1.92)
CD4 categories
Below 350	42	7,766	1	1	1
350–500	6	2,555	0.41 (0.20–0.84)	0.42 (0.21–0.87)	0.19 (0.04–0.80)
Above 500	4	3,094	0.16 (0.06–0.40)	0.16 (0.07–0.42)	0.15 (0.04–0.64)
Ever use art
No	51	5,356	1	1	1
Yes	354	72,987	0.46 (0.36–59)	0.43 (0.33–0.55)	0.34 (0.15–0.79)
Functional status
Bedridden	58	2,589	1	1	1
Ambulatory	14	326	0.97 (0.56–1.71)	0.92 (0.52–1.63)	2.14 (0.23–19.94)
Working	327	74,594	0.05 (0.04–0.07)	0.05 (0.04–0.07)	0.15 (0.05-0.47)
CTC enroll year
2003–2007	45	12,828	1	1	1
2008–2012	155	31,926	1.37 (1.03–1.84)	1.51 (1.12–2.03)	2.97 (1.05–8.43)
2013–2017	205	33,589	3.50 (2.66–4.59)	4.05 (3.04–5.39)	2.55 (0.79–8.20)
Nutritional status
Ok	278	50,449	1	1	1
Moderate	45	3,558	5.53 (4.04–7.58)	6.94 (4.92–9.80)	0.93 (0.20–4.22)
Severe	11	207	27.95 (15.30–51.06)	28.05 (15.09–52.16)	9.27 (2.15–39.95)