Figure 1.
POS: Positive QuantiFERON TB Gold in-tube test; NEG: Positive QuantiFERON TB Gold in-tube test; INDET: Indeterminate QuantiFERON TB Gold in-tube test.
Figure 2.
QuantiFERON TB Gold in-tube test results at Day-0, by CD4 count category.
a positive: Nil ≤8.0 IU/ml, TB Antigen minus Nil ≥0.35 IU/ml and ≥25% of Nil value; b negative: Nil ≤8.0 IU/ml, TB Antigen minus Nil <0.35 IU/ml and Mitogen minus Nil ≥0.45; or Nil ≤8.0 IU/ml, TB Antigen minus Nil ≥0.35 IU/ml and <25% of Nil value, and Mitogen minus Nil ≥0.45; c indeterminate: Nil tube >8.0 IU/ml, or Nil tube ≤8.0 IU/ml and TB Antigen minus Nil <0.35 IU/ml and Mitogen minus Nil <0.45; or Nil tube ≥8.0 IU/ml and TB Antigen minus Nil ≥0.35 IU/ml and <25% of Nil value, and Mitogen minus Nil <0.45.
Figure 3.
Distribution of QuantiFERON TB Gold in-tube test results at Day-0, by CD4 count category in patients with positive tests and with or without active tuberculosis.
Box plots show median value, interquartile range, and range. p: Kruskal-Wallis test.