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Table 3 Overall incidence rate and clustering by SEP index quartiles

From: Neighborhood socioeconomic position and tuberculosis transmission: a retrospective cohort study

 

High SEP

Medium-High SEP

Medium-Low SEP

Low SEP

Number of block groups

81

83

82

81

Population, %

26.3

24.8

24.2

24.7

Total case count

104

114

120

181

Total populationa

1 007 559

950 310

925 794

946 953

5-yr PY Incidence/100,000

10.32

12.00

12.96

19.11

Clustered cases, %b

27.9

38.6

44.2

47.5

Non-clustered case 5-yr PY Incidence/100,000c

7.44

7.37

7.24

10.03

Cluster case 5-yr PY Incidence/100,000c

2.88

4.63

5.72

9.08

  1. SEP = Socioeconomic Position, PY = Person-Year.
  2. aPopulation figure provides proportion of total population in block groups in a particular SEP quartile.
  3. bChi squared test of proportions, top quartile vs. bottom quartile, P < .0001.
  4. cChi squared test for trend across SEP quartiles, P = 0.001.