Detection of risk clusters for deaths due to tuberculosis specifically in areas of southern Brazil where the disease was supposedly a non-problem

Table 2 Risk clusters for TB deaths, according to the steps in risk function, in Londrina, Brazil (2008–2015)

Rate	Pop. at risk (%)	Steps in risk function	No. census sectors	Pop. of cluster	Annual cases/100,000	No. Cases	Expected cases	SRR^a (95% CI)	Radius (km)
High	10	1	2	1846	27.0	4	0.2	20.8 (7.5–57.1)	0.3
	10	2	62	47193	3.7	14	5.7	2.05 (1.1–3.7)	1.8
	30	1	2	1846	27.0	4	0.2	24.4 (8.9–67.3)	0.3
		2	71	55843	3.5	16	6.8	2.43 (1.4–4.3)	1.9
		3	107	79956	3.2	21	2.9	2.31 (1.3–3.9)	2.5
		4	130	95969	3.1	24	3.6	2.09 (1.2–3.4)	2.8
		5	149	112273	3.0	27	2.0	2.03 (1.2–3.3)	2.9
	50	1	2	1846	27.0	4	0.2	24.46 (8.9–67.3)	0.3
		2	71	55843	3.5	16	6.8	2.43 (1.4–4.3)	1.9
		3	107	79956	3.2	21	2.9	2.31 (1.3–3.9)	2.5
		4	130	95969	3.1	24	1.9	2.09 (1.2–3.4)	2.8
		5	149	112273	3.0	27	2.0	2.03 (1.2–3.3)	2.9
		6	281	203846	2.3	38	11.7	1.4 (1.3–3.9)	3.9
Low	10	1	63	53032	0	0	6.1	0 (0.0)	1.6
	30	1	31	23448	0	0	2.7	0 (0.0)	4.0
	30	2	216	35782	1.7	5	15.5	0.25 (0.1–0.6)	6.0
	50	1	31	23448	0	0	2.7	0 (0.0)	4.0
		2	217	144348	0.4	5	15.6	0.23 (0.09–0.6)	6.0
		3	230	154346	0.5	6	1.3	0.6 (0.1–0.5)	6.0
		4	261	156194	0.6	8	2.3	0.63 (0.1–0.6)	6.3

ISSN: 1471-2334