Effectiveness Measures | TST | T-SPOT.TB | QFT-GIT | TST/T-SPOT.TB | TST/QFT-GIT |
---|---|---|---|---|---|
Numbers of post-primary TB cases in 2 year period | 4.52 | 3.80 | 4.03 | 4.67 | 4.85 |
Number of TB cases prevented by screening strategy | 2.98 | 3.70 | 3.47 | 2.83 | 2.65 |
Numbers of people treated for LTBI | 284 | 228 | 242 | 174 | 168 |
Numbers of true positives treated | 184 | 228 | 214 | 174 | 163 |
Numbers of false positives treated | 101 | 0 | 28 | 0 | 5 |
Numbers of people treated for LTBI per case of active TB prevented (NNT) | 95.5 | 61.7 | 69.7 | 61.7 | 63.6 |