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

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

Rate Pop. at risk (%) Steps in risk function No. census sectors Pop. of cluster Annual cases/100,000 No. Cases Expected cases SRRa (95% CI) Radius (km)
High 10 1 2 1846 27.0 4 0.2 20.8 (7.5–57.1) 0.3
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
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
  1. aSpatial relative risk