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Table 2 Characteristics of Cases Found in the Large Clusters in Harris County, TX

From: Spatial-temporal distribution of genotyped tuberculosis cases in a county with active transmission

Variable Total G00010 G00014 G00769 G01521 G08964 P-valuea
N = 233 % n = 118 50.64% n = 38 16.31% n = 33 14.16% n = 26 11.16% n = 18 7.73%  
Age              0.057
 0–4 5 2.2 3 2.5 1 2.6 0 0.0 0 0.0 1 5.6  
 5–15 2 0.9 0 0.0 0 0.0 1 3.0 0 0.0 1 5.6  
 15–24 22 9.4 5 4.2 3 7.9 7 21.2 2 7.7 5 27.8  
 25–44 64 27.5 35 29.7 9 23.7 8 24.2 7 26.9 5 27.8  
 45–64 109 46.8 61 51.7 18 47.4 12 36.4 14 53.9 4 22.2  
 65+ 31 13.3 14 11.9 7 18.4 5 15.2 3 11.5 2 11.1  
Gender              0.002
 Female 60 25.8 22 18.6 10 26.3 16 48.5 4 15.4 8 44.4  
 Male 173 74.3 96 81.4 28 73.7 17 51.5 22 84.6 10 55.6  
Ethnicity              <0.001
 White 42 18.0 18 15.3 4 10.5 10 30.3 8 30.8 2 11.1  
 Black 112 48.1 73 61.9 13 34.2 16 48.5 7 26.9 3 16.7  
 Asian 9 3.9 6 5.1 1 2.6 1 3.0 0 0.0 1 5.6  
 Hispanic 69 29.6 21 17.8 20 52.6 5 15.2 11 42.3 12 66.7  
 Other 1 0.4 0 0.0 0 0.0 1 3.0 0 0.0 0 0.0  
HIV status              0.252
 Negative 176 75.5 86 72.9 27 71.1 28 84.8 22 84.6 13 72.2  
 Positive 35 15.0 23 19.5 7 18.4 2 6.1 2 7.7 1 5.6  
 Not Offered 22 9.4 9 7.6 4 10.5 3 9.1 2 7.7 4 22.2  
Homeless              <0.001
 No 195 83.7 87 73.7 35 92.1 33 100.0 22 84.6 18 100.0  
 Yes 38 16.3 31 26.3 3 7.9 0 0.0 4 15.4 0 0.0  
Excessive Alcohol              0.002
 No 125 53.7 67 56.8 17 44.7 21 63.6 6 23.1 14 77.8  
 Yes 108 46.4 51 43.2 21 55.3 12 36.4 20 76.9 4 22.2  
Drug Use              0.047
 No 166 71.2 80 67.8 25 65.8 29 87.9 16 61.5 16 88.9  
 Yes 67 28.8 38 32.2 13 34.2 4 12.1 10 38.5 2 11.1  
Origin          0 0.0    0.004
 U.S. Born 202 86.7 104 88.1 29 76.3 31 93.9 26 100.0 12 66.7  
 Foreign Born 31 13.3 14 11.9 9 23.7 2 6.1 0 0.0 6 33.3  
Country of Origin              <0.001
 United States 202 86.7 104 88.1 29 76.3 31 93.9 26 100.0 12 66.7  
 Mexico 18 7.7 8 6.8 5 13.2 0 0.0 0 0.0 5 27.8  
 Vietnam 5 2.2 4 3.4 0 0.0 0 0.0 0 0.0 1 5.6  
 Honduras 2 0.9 0 0.0 2 5.3 0 0.0 0 0.0 0 0.0  
 Other 6 2.6 2 1.7 2 5.3 2 6.1 0 0.0 0 0.0  
Years in US median, (SD) [IQR] 18(13.2) [13,29] 22(15.1) [15,32] 17(9.3) [13, 17] 33.5(24.8) [16,51] NA 18 (8.8) [12, 19] 0.490
Risk Factors              
 Diabetes 36 15.5 16 13.6 7 18.4 7 21.2 4 15.4 2 11.1 0.795
Contact of infectious TB Pt 19 8.2 9 7.6 2 5.3 5 15.2 1 3.9 2 11.1 0.481
Post-organ transplant 1 0.4 1 0.9 0 0.0 0 0.0 0 0.0 0 0.0 0.913
 End stage renal dis. 3 1.3 3 2.5 0 0.0 0 0.0 0 0.0 0 0.0 0.564
 Immunosuppression 4 1.7 2 1.7 1 2.6 13 0.0 0 0.0 0 0.0 0.862
Clinical Characteristics              
 Previous TB              0.706
 No 219 94.0 110 93.2 35 92.1 32 97.0 24 92.3 18 100.0  
 Yes 14 6.0 8 6.8 3 7.9 1 3.0 2 7.7 0 0.0  
SP smear              0.887
 Negative 91 39.1 49 41.5 12 31.6 13 39.4 9 34.6 8 44.4  
 Positive 120 51.5 58 49.2 23 60.5 17 51.5 15 57.7 7 39.9  
 Not tested 22 9.4 11 9.3 3 7.9 3 9.1 2 7.7 3 16.7  
SP Culture              0.708
 Negative 18 7.7 11 9.3 1 2.6 2 6.1 1 3.9 3 16.7  
 Positive 193 82.8 94 79.7 34 89.5 28 84.9 23 88.5 14 77.8  
 Not tested 22 9.4 13 11.0 3 7.9 3 9.1 2 7.7 1 5.6  
Chest X-Ray              0.518
 Abnormal 213 91.4 104 88.1 35 92.1 31 93.9 25 96.2 18 100.0  
 Normal 9 3.9 8 6.8 1 2.6 0 0.0 0 0.0 0 0.0  
 Not tested 11 4.7 6 5.1 2 5.3 2 6.1 1 3.9 0 0.0  
X-Ray Cavity              0.144
 No 150 70.4 66 63.5 30 85.7 22 71.0 18 72.0 14 77.8  
 Yes 63 29.6 38 36.5 5 14.3 9 29.0 7 28.0 4 22.2  
Pulmonary              0.569
 No 13 5.6 8 6.8 1 2.6 3 9.1 1 3.9 0 0.0  
 Yes 220 94.4 110 93.2 37 97.4 30 90.9 25 96.2 18 100  
  1. Definition of abbreviations: SD Standard Deviation, IQR Interquartile Range
  2. aPearson’s chi-square test