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Table 2 Concordance rate of tuberculin skin test and QuantiFERON ® -TB Gold In-Tube at inclusion

From: Agreement between QuantiFERON®-TB Gold In-Tube and the tuberculin skin test and predictors of positive test results in Warao Amerindian pediatric tuberculosis contacts

  Tuberculin skin test, n (%) Total, n QuantiFERON®-TB Gold In-Tube, n (%) Total, n Kappa (95% CI)
Positive Negative   Positive Negative Indeterminate*   
Total 74 (45) 89 (55) 163 63 (42) 77 (51) 11 (7) 151 0.76 (0.46-1.06)
Active TB 6 (55) 5 (45) 11 7 (78) 1 (11) 1 (11) 9 0.39 (−0.19-0.97)
Chest-Xray in asymptomatic children  
  TB sequelae 34 (56) 27 (44) 61 30 (52) 24 (41) 4 (7) 58 0.73 (0.54-0.91)
  No features of TB 32 (37) 55 (63) 87 25 (31) 51 (62) 6 (7) 82 0.77 (0.62-0.92)
BCG vaccination status  
  BCG scar present 65 (46) 75 (54) 140 55 (42) 67 (51) 9 (7) 131 0.74 (0.62-0.86)
  BCG scar absent 9 (39) 14 (61) 23 8 (40) 10 (50) 2 (10) 20 0.89 (0.68-1.09)
Age  
  0 - 4 years 4 (9) 41 (91) 45 2 (5) 32 (82) 5 (13) 39 0.79 (0.38-1.20)
  5 - 15 years 70 (59) 48 (41) 118 61 (55) 45 (40) 6 (5) 112 0.69 (0.55-0.83)
  1. *For calculation of kappa values, children with indeterminate QuantiFERON®-TB Gold In-Tube results were excluded.