Test and cut-off point | Patients Number (%) | Contacts Number (%) | Controls Number (%) |
TST in mm | |||
<10 mm | 0 (0.0) | 24 (27.3) | 40 (53.3) |
≥10 and <15 mm | 4 (8.3) | 6 (6.8) | 9 (12.0) |
≥15 mm | 44 (91.7) | 58 (65.9) | 26 (34.7) |
IFN-g level (IU/ml) | |||
≥0.35 IU/ml | 36 (81.8) | 64 (70.3) | 32 (55.2) |
<0.35 IU/ml | 8 (18.2) | 27 (29.7) | 26 (44.8) |