Table 4

Results of T-Spot.TB and QFG-IT compared with result of tuberculin skin test (TST) for both the definite and the case cohort

TST
+Total
(A) T-Spot.TB versus TST for case cohort (total no)
 T-Spot.TB
  +341145
  −152439
  TF167
 Total504191
(B) QFG-IT versus TST for case cohort (total no)
  +791796
  −153853
  Ind369
 Total9761158
(C) T-Spot.TB versus TST for definite cohort (total no)
 T-Spot.TB
  +14216
  −808
  TF011
 Total22325
(D) QFG-IT versus TST for definite cohort (total no)
 QFG-IT
  +31435
  −235
  Ind213
 Total35843
  • A TST of >15 mm is classed as positive.

  • Ind, indeterminate; TF, test failure.