Economic outcomes
| Base-case | Lower limit | Upper limit | |
| Varying cost of RT 23 EUR | |||
| Total saving per 1000 close contacts# | |||
| TST/QFT-G | 39010 | 39010 | 39010 |
| TST/BCG/QFT-G | 35610 | 35610 | 35610 |
| QFT-G | 29770 | 22280 | 37270 |
| Cost per contact investigated | |||
| TST alone | 91.06 | 85.06 | 98.56 |
| QFT-G | 61.29 | 61.29 | 61.29 |
| TST/QFT-G | 52.05 | 46.05 | 59.55 |
| TST/BCG/QFT-G | 55.45 | 49.45 | 62.95 |
| Varying cost of QFT-G EUR | |||
| Total saving per 1000 close contacts# | |||
| TST/QFT-G | 39010 | 42340 | 22250 |
| TST/BCG/QFT-G | 35610 | 47380 | 22100 |
| QFT-G | 29770 | 49770 | -10230 |
| Cost per contact investigated | |||
| TST alone | 91.06 | 91.06 | 91.06 |
| QFT-G | 61.29 | 41.29 | 101.29 |
| TST/QFT-G | 52.05 | 43.68 | 68.81 |
| TST/BCG/QFT-G | 55.45 | 48.72 | 68.90 |
| Varying pPrev | |||
| Total saving per 1000 close contacts# EUR | |||
| TST/QFT-G | 39010 | 63670 | 14340 |
| TST/BCG/QFT-G | 35610 | 57250 | 13960 |
| QFT-G | 29770 | 53350 | 6160 |
| Cost per contact investigated EUR | |||
| TST alone | 91.06 | 122.04 | 60.07 |
| QFT-G | 61.29 | 68.69 | 53.89 |
| TST/QFT-G | 52.05 | 58.37 | 45.73 |
| TST/BCG/QFT-G | 55.45 | 64.79 | 46.11 |
| Varying probability of suspected TB on CXR | |||
| Total saving per 1000 close contacts# EUR | |||
| TST/QFT-G | 39010 | 39090 | 39910 |
| TST/BCG/QFT-G | 35610 | 35690 | 35530 |
| QFT-G | 29770 | 29850 | 29670 |
| Cost per contact investigated EUR | |||
| TST alone | 91.06 | 91.17 | 90.94 |
| QFT-G | 61.29 | 61.32 | 61.27 |
| TST/QFT-G | 52.05 | 52.08 | 52.03 |
| TST/BCG/QFT-G | 55.45 | 55.48 | 55.41 |
| Varying cost of chest radiograph¶ EUR | |||
| Total saving per 1000 close contacts# | |||
| TST/QFT-G | 39010 | 9130 | |
| TST/BCG/QFT-G | 35610 | 9390 | |
| QFT-G | 29770 | 1190 | |
| Cost per contact investigated | |||
| TST alone | 91.06 | 53.52 | |
| QFT-G | 61.29 | 52.33 | |
| TST/QFT-G | 52.05 | 44.39 | |
| TST/BCG/QFT-G | 55.45 | 44.13 |
RT 23: purified protein derivative of tuberculin RT 23 (2 TU·0.1 mL-1) from the Danish Statens Serum Institute; EUR: Euro; TST: tuberculin skin test; QFT-G: QuantiFERON-TB Gold; BCG: bacille Calmette–Guérin; pPrev: probability of a contact receiving isoniazid chemoprevention; TB: tuberculosis; CXR: chest radiography. #: relative to TST screening; ¶: no upper limit assumed in comparison with base-case cost.