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Table 1 Bivariate logistic regression analysis of risk factors associated with clustering.

From: Conventional and molecular epidemiology of Tuberculosis in Manitoba

Characteristic Incidence Clustered Non-Clustered Odds Ratio p value
  (person-year/100 000) n = 426 (%) n = 203 (%) (95%) CI  
Sex      
Female 8.4 167 (39.2) 102 (50.2) 1 (reference)  
Male 10.1 259 (60.8) 101 (49.8) 1.57 (1.12–2.19) 0.011
Age *      
0 to 14 3.1 18 (4.2) 4 (2.0) 4.61 (1.39–16.84) 0.004
15 to 24 5.8 51 (12.0) 17 (8.4) 3.07 (1.58–6.03) 0.000
25 to 44 10.4 170 (39.9) 47 (23.1) 3.70 (2.33–5.89) 0.000
45 to 64 10.7 102 (23.9) 48 (23.6) 2.17 (1.35–3.52) 0.000
65 + 18.4 85 (20.0) 87 (42.9) 1  
Origin      
Canadian-Born (non-treaty) 3.3 97 (22.8) 60 (29.6) 1  
Canadian-Born (treaty) 48.4 254 (59.6) 27 (13.3) 5.82 (3.46–9.54) 0.000
Foreign-Born 20 75 (17.6) 116 (57.1) 0.340 (0.261–0.620) 0.000
Residence      
Winnipeg 9.7 235 (55.1) 153 (75.4) 1  
other urban 4.1 14 (3.3) 11 (5.4) 0.829 (0.369–1.829) 0.809
reserves 33.7 148 (34.7) 15 (7.4) 6.424 (3.563–10.947) 0.000
other rural 9.2 29 (6.9) 24 (11.8) 0.787 (0.443–1.392) 0.051
Site of Infection      
Extrapulmonary   111 (26.1) 66 (32.5) 1  
Pulmonary   315 (73.9) 137 (67.5) 1.367 (0.951–1.969) 0.112
  1. * χ2 test for overall linear trend in age = 32.6, p < 0.001